Why do I cry whenever me and my girlfriend stop talking for a bit cause she has to do something and

So basically whenever my girlfriend has to go somewhere or do something and we're texting, I'm usually in my room. So when she leaves for whatever reason I start to cry, alot. I just can't be with out her, literally. I'm a 15 year old boy. We've been going out for some months and I love her to death. We have such a good relationship and no problems at all. But I want to know why I cry when she has to leave to do something): I know that it's because I miss her and I start to think off all the moments of me and her together. We usually don't see each other as often so I guess that too): I get depressed and think I'm not man enough for her if I keep crying. I told her about it and she says she loves me no matter What): but I want to stop crying, I just can't take it): any tips on how to stop crying or why I cry is really appreciated.
Asked Jan 28, 2016

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