She could be texting her girlfriends, that’s one of the options. Hey if she cares enough to notice that you’re a little off... that’s gotta mean something. Try to look at things from another perspective. Not saying yours is wrong but I don’t think it’s the most healthy for you and your relationship.

Think of it this way. If she’s cheating, it’s not gonna work out anyway. You just lost 4mths. If she’s not cheating, then dude you gotta work on your insecurities. Relationships do not teach you about self worth. Rather, it tests it. If you don’t have any self worth, you’ll keep trying to seek validation and distrust your partner at the drop of a hat. That’s a terrible way to go forward.