Relationship worries!

PrincessEm • Live, Laugh & Love
Hi, I've been in a relationship with my SO for over 2 years now yet I recently found out my So was chatting to other woman on snapchat you know those desperate ones who get their boobs etc out. Basically I spoke to him afterwards and he said he was stupid and that he was just bored and fed up!? I can't get it out my head and it's really bothering me now as I'm not sure if he shall do it again the next time he's bored, what made it worse was the fact he done it the day after I attended my aunts babies funeral last Monday so he knew I was already so upset as I had experienced a miscarry with him last year in July and with my aunty loosing her baby of 27 weeks it was really tough for all of my family yet he still done something like that too me I dread to think what he might of done if I didn't speak to him about it or brought up the fact I saw it all for myself as if I didn't catch him out who knows what he would still be doing. What shall I do as I'm in two different minds about it i did forgive him that same day yet it's still bothering me even after a week.