Suffering rn

I just woke up and checked my dms after a few days of being offline due to a cold. And I'm talking to my bf and then check his profile and see some chicks name with a <3 next to it. And I'm really suspicious about allat bc he ain't the type of dude to add ppls name like that, not even mine (now that I think about it, would that count as a red flag?)
My friends are all offline, prob sleeping and I really don't know what to do except ask randos on the internet.
We have been together since late February btw