Snap Chat randoms!

So at the beginning of my relationship with my boyfriend I used his SC as my phone died to take a selfie and I discovered random adds of girls on his SC and obviously I asked him about it and he said that these girls are nothing and he didn’t talk to them now we are in a relationship and deleted them off, so we’re now 3 years in and have a 7 month old together and I don’t know what possessed me to look on his SC let’s just say girls intuition and I see a girls name top of the list and the ❤️ symbol which means they been talking none stop for a whole month, I asked him who this girl was he said an old school friend that txted him every other day and they had a catched up.

I don’t know if I’m being paranoid or not and the fact I’ve been hurt before it’s really wrecking my brain I guess cuz the messages weren’t on save chat I have no evidence to convict him of anything and it’s not black and white am in this grey area of to believe him or not?

He seemed super sketchy on information about her other then she had kids and is in a relationship I dunno I’m just ranting now and I’m a state of limbo.