Boyfriend problems

Hi ladies... I’m about to get my period and I’m feeling sad and moody and like I need a little reassurance. My boyfriend is currently out at the bars with his friends. (We’re seniors in college) I just wasn’t feeling like going out tonight. Over the past few days I’ve noticed some things about my relationship. My bf never fails to tell me he loves me and always makes sure I smile but it’s the little things that get to me. He used to be all over me all the time no matter where we were. And I’m not talking about gross pda and stuff but more about holding hands and sitting next to eachother when surrounded by friends. I also have a really bad feeling about this girl he is friends with. I KNOW she likes him and she isn’t afraid to rub it in my face. He claims he doesn’t see what I see and I truly believe him on that. I trust him completely but I don’t at all trust her. Am I the only girl in a relationship that sometimes feels like this????