Life between love and fate

We have to say "Goodbye"

After along time of sitting and thinking, they decided that they have to say goodbye to each others. They know how difficult is this decision and they also know that they will never forget each others, but the life must go on. It's the best decision for them. This time they have to say goodbye hoping that one day life will let them to meet again.
So they decided to spend the next day together and at the end of the day they will say "Goodbye".
"Martin" held his phone and started calling "Serena". At the same time "Serena" held his phone to call "Martin".
While she was about to call him, he found his name appeared on her phone's screen.
So she quickly answered his call.
"Serena" answered with "Hi"
"Serena": Hi, how are you?
"Martin": Good. And you?
"Serena": Good.
"Martin": Can we spend the next day together?
"Serena": I was about to say the same thing. Of course we can.
"Martin": Thank you.
"Serena": Always welcome. When will we meet?
"Martin": Tomorrow morning from the beginning of the day till the end of the day.
"Serena": Good. It's a good idea.
"Martin": Great. Goodnight. See you tomorrow.
"Serena": Goodnight. See you.
And they ended the call and they are sure that they will never sleep till the next day.
Constantly, life puts us in a very hard situations and force us to abandon of the most important things that we want and we cannot live without it, but life always has a different opinion...