His Snapchat score... am I going crazy?

Anonymous
So before my boyfriend & I got together we would have chats all day & late at night over snapchat by sending a photo with writing on it instead of the chat side of it.
We have now been together for 5 months & I think he's talking to other people on there which I assume to be a girl. He is quite flirty but I trust him when he's out.

last night he went out with most of his boy friends to a bar and his Snapchat score went up by nearly 200 & I didn't get a single snap... now am I just being paranoid? I feel like I'm going crazy, I don't even know why I looked at his score yesterday to check.

I'm a strong believer of the gut feeling & have it with this. He has always said to me, if he wasn't interested in me or didn't want to be with me, he would tell me rather than drag it out. So I know that, but why would he be talking to someone so much for his score to go up by 200?
How to I bring that up in convo without sounding mad?
Also this is his first relationship. He's 22 & im 25.
His Snapchat score... am I going crazy?
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