So my boyfriend and I have been together for 2 years. We are currently in a long distance relationship. We have had some troubling times somewhat recently (maybe about a month ago), and we got through it.

Anyways, to the point. The past 4-5 days his snapchat has been going crazy. And I mean every 25 seconds he would get a message He has 3 people on there: his brother, our mutual friend, and me. He hasn’t mentioned making any new friends, so I figured it was either his brother or our friend. Come to find out, it is some girl that he knows. I don’t want to assume, but any time I ask about it, he gets really weird and sometimes even defensive. I don’t want to think the worst, but it wouldn’t be the first time it has happened to me. With him not answering any questions, I know little to nothing about her, not even her name. I’m worried because of the way he acts about it and our recent problems that he may be cheating. What do I do?