Malec - Does he know?

Confused

"ALEC!!!!!!!!!!!!!"
I could hear Izzy yelling all the way from the garage. Before she came flying though the door to my room.
She looked so happy, flustered and excited.

"What did you do?"
"Why haven't you told me? I should have known. Have I used to much hairspray the last couple of years?
"Angel, if Clary only knew!"
"Oh and you lucky guy, you better be excited about the weekend."

I must look like I felt. Completely confused and overwhelmed. Because Izzy started laughing hysterically, but suddenly stopped and quietly sat next to me on my bed.

"Why didn't you tell me?" She said soothingly. "You can trust me, you know you can. I will keep it a secret if you aren't ready to tell it to anyone."

She scared me, but I was also very confused about what she was talking about. Was she loosing her mind?

"Izzy, ...... I'm sorry but I have no clue what we are talking about. You are kind of scaring me. Have you inhaled that hairspray you are talking about?"

"Oh Alec. I love you but you are to closed off and secretive for your own good.
Why didn't you tell me, that you are gay?"

I almost fainted when she said that. How did she know? Did I do something wrong? I shouldn't have worn that green shirt the other day. It was way to flashy.

Izzy looked at me with her open and trusting eyes.

"Izzy, I....... Please don't tell anyone.
Did I talk in my sleep?
Has anyone said anything to you?
Oh my g... what do I do?
Does mom and dad know?
Has Simon and Jace said anything?"

I almost started crying. 

"Oh big brother. Nooooo don't look like that. Nobody knows. Nobody has said anything.
I just figured it out while talking to Magnus, when he drove me home."

"MAGNUS!" Oh no........ He told you?" My heart is hammering so hard. I'm gonna die for sure.

"No, calm down. Listen to me. Magnus didn't say a thing. Now calm down and listen to me ok."
I nodded. I didn't trust my voice at the moment.

"We were driving home from the Mall and he was telling me about what happened when you gave you your birthday present. He was so happy Alec, he was beaming. He has been humming songs all afternoon, he shopped like crazy and he's been this ray of sunshine.
I told me in private that he was so happy about your reaction about the present. That you had been really "appriciative", that you had hugged him and that you had made him all flustered about your suggestion about swimming trunks colors.
That's where it clicked for me.

Alec, you would never EVER talk to anybody about color of clothes. And you would for sure never get that close to another guy and whisper anything in his ear, if you didn't have a really good reason.

You have feelings for him, am I right?"

I was stunned. I would never have thought that anyone would find out about this. I have always thought that I wouldn't be able to have a relationship with a guy. People are so judgmental and I sure didn't feel comfortable about telling anyone about this.
I don't want peope to treat me differently.

"Izz, I'm.. oh man how do I do this. Please don't tell anyone okay?!"

"You can trust me big brother. I'm not going to tell anything to anyone if you don't want me too okay."

"*Sigh*, Izz I've been in love with Magnus forever. Since the day I met him. But I've never known that he was into guys aswell. I knew of his girlfriends, well we all did, right.
But lately it's been really hard for me to keep secret. And he's so flirty and nice to me.

The present today was so sweet, generous and troughtfull and I think it made me drop my guard.
I really don't hope he misinterpreted anything."

"Alec!" Izzy smacked the back of my head.
"You are so stupid sometimes. Do you have any gaydar at all?

I snorted *is this something recurrent at the moment? I never snort* "Gardar? Is that a thing?
And no, I have no idea about all of this."

"Big brother, Magnus is so into you, it hurts to look at, and he's felt like this for years. Magnus doesn't have an idea that you are gay. He only knows that you've never had a girlfriend and hopes that you at some point will act on his flirting.

He got you this present because he was hoping that it was something you two could "practise", when we get to the lake. For some "ALONE" time. He has it so bad for you and will just about anything to spend some time with you.
Not even Simon and Jace has a clue about his feelings. Guys are so ignorant about things like this.
Clary and I talked about it the other day. How sad it is to watch Magnus through himself at you, and you always just reply like a gentleman. But we had no clue that you were gay.
Good job hiding bro. But now it's over, if you like.
I'll be your wingman if you need my help." She winked at me.

I was speachless. What should I do? Do I come out? What about mom and dad? What about the guys? School? My future?

"Izzy, I really need to think about this. I'm not sure what I feel right now. Could you give me some space to think this trough?"

"Oh sweety, I'll give you all the time you need. Just, don't keep secrets from me ever again okay?! I'm your sister. You can trust we with anything. I'll leave you alone now, but you know where to find me ok." and with that she walked towards the door.

"Izzy? What did you mean with "You lucky guy?" earlier when you came though the door?"

She gave me a big smile. "Magnus is going to blow your little gay mind, just you wait and see."