<human>: Can you summarize the given text in a few sentences?

I'm a 16 y/o boy and have been in a relationship with my gf also 16 for about a month, I feel way too many times jealous and uncomfortable. I try to not let her know because she gets annoyed and it usually leads to a fight and I'd rather keep my feeling to myself than fight.

How I get jealous; today she was talking to some guy-friend on fb and they were chatting and then she asks if he still works in the fast food restaurant and he says no but he works at another one, and she says which one and it happens to be the one who she really likes, after that she asks if she could eat free there sometimes and he says sure, she then says "love youu" and closes the chat. I felt really uncomfortable and said to her something along the lines of "nice, so you're flirting with guys on facebook to get free-food?" and this bothered her a lot, I later apoligized because Idgaf if I'm wrong or not i just cba to be fighting over me being jealous.

Now the other situation which is now: she's in a theater group at my school and because they are almost done with their shows they're gonna celebrate by going renting a summer-house and idk, like celebrate or something..

I just feel uncomfortable and in-secure for whatever reason and I can't seem to change it, I trust her completely but idk what is wrong with me. 

Also we can only meet every-other weekend so this means we won't be able to meet and stay at eachothers house for 2 weeks and that is the one thing that bothers me..
<bot>: I am insecure and jealous because she's going to party with her theatre group over a weekend at a summer house and becase of that we cant stay at eachothers house for 2 weeks