Alex and David - A gay story

Cheating?

Alex's POV
*Dirty Warning*
I thought I was the only one home, when I heard moans. I didn't suspect much, just thought it was someone getting laid, when suddenly  it sounded like it was coming from David's room. I walked over to it, but I heard a girl inside. I guess it was Dom being stupid again and sleeping with someone in David's bed for the third time. I knocked on the door.
"Yo Dom, you know you're in David's room, he's gonna be piss-"
I stopped mis sentence. I heard a name. And it wasn't Dom's.
"Oh, David"
I opened the door immediately. There he was, laying on top of a girl.
"What the fuck do you think your doing, David?"
"Alex! I uh..." David stumbled.
"What the fuck? What is this pervert doing in here?" The girl said, covering herself.
"This 'pervert' is his boyfriend." I said, making motions to myself.
I heard the front door open.
"What's going on here? Alex, what are you doing?" Scotty walked up. He looked into the bedroom.
"Alex? What the fuck, leave them alone." Scotty said.
I stared at David with tears in my eyes. Nostrils flaring, red red, I turned and stomped off. I was so close to giving away our secret to someone else. So close to explaining this. I heard Scotty shut the door behind him.
"What were you doing man?" He asked from behind me.
"We- I... I thought it was Dom. But it wasn't, okay?" I said, turning around.
"Dom isn't in town. Why would he be in David's bedroom?" Scotty asked.
I forgot he wasn't  in town. That just makes matters worse.
"Tell the truth man." Scotty said.
"You want to know the truth? Between you and me man? We're gay. David and I are. And we're dating. No body else knows, well except Toddy. But I heard a girl moan his name. He cheated. That's what I was doing." I turned around and left. I slammed the front door behind me. Right after I left, I heard David and Scotty talking in the living room. I sat on the front porch for a few minutes. The girl David was sleeping with came out. She didn't notice me at first.
"You didn't know?" I asked. She turned around.
"He's gay? Yeah, because I would totally know that."
"I guess he's bisexual. But we were still dating." I said.
"Look. I'm sorry. I really am. I'm not the type of person who would influence someone who's in a relationship to cheat. He told me nothing. I'm sorry." She turned around.
"I believe you." I said.
She gave one last look over her shoulder before leaving. I sat on the porch for a few minutes. Conveniently, or, inconveniently, David came out, looking for me. I stood up immediately.
"Alex..." David said, reaching for my hand.
"Don't fucking touch me." I told him "Don't. Fucking. Touch me."
"Alex, I'm sorry..."
"I don't care David! You still did it. You still fucking did it you fuckboy. What was it? Were you using me for sex? Get an experience out of it? What, to go tell girls 'yeah.. I've fucked a guy before.' Because it's so appealing? What was it David? Why did you cheat?" I asked.
"No, Alex... I- I don't have a good explanation. I'm jerk. I a huge ass jerk. I don't deserve you, I don't know why I did it. I guess it was something about switching over.. missing girls? Missing straight sex? I don't know, because you and I, we have great sex together. So Alex, I don't know why I did it. I have no explanation."
Tears were running down my cheeks. without saying a word, I turned around and left.