Should i take him back? 10 points!?

Ok, so me and my boyfriend was hanging out having fun (you know the usual ) then his friend called him & he talked to him for like 5 mins. I was in my living room, & he was in my kitchen. i heard him say, "yeah Carly looked so hot today, like damn"...now, im a pretty chill girl & usually i couldn't give any less of a ****. BUT carly is his "best friend" and ex...Yeah **** my life right? Anywho. I said "carly looked pretty today dont you think, i loved her shirt" he played it cool & said "eh she looked alright not as good as you babe" BUT THEN he said "i miss her" i was like "what do you mean" He said "like as a gf" That pissed me off im like why the **** would you miss her! That must have pissed him off, cuz he said she gives better ... (you know what im talking about) then i said well "sorry im not a whore, and am not a pro at giving them, well **** you, go find that ***** and let her give you one!" he left. And a week later his friend came to me & said "Angie i think you should know something..Seth is cheating on you, he went into the locker room with carly so yeah" so yeah should i be so pissed off & want to cut his head off with a spoon? He came to my house & gave me flowers, he said he was SO sorry. It was cute:} Should i take him back? before he cheated we dated for 7 months faithful.