Fwb cut off?

ok so heres the tea. I got a fwb we gone call him klous (cause i like vampire diaries.) so about a year ago i cut klous off because i ended up getting into a relationship with someone. (Not an important person. Was a cheater.) but yea. So i cut klous off. That relationship ended and i started fooling around with klous again. Here is the dilemma tho so recently one of our mutual friends had called him. And I guess my name came up or whatever. So the next thing I know he calls me up. I go over to his place thinking something was wrong. But no he acts normal and we mess around per usual. But then he tells me. “You know how last year you were in a relationship. Well now im in a situation ship” and how my friend almost got him caught up with some female. But now I feel a little guilty for messing around with him. But I didn’t know he had a girl. And even tho he says it is a situationship. Im pretty sure it’s more than that cause he wanted to buy a plan b. Which i took cause I don’t want any kids right now or anything. But something just didn’t sit right. Like you say there is someone you wanna be with. But still initiated sex. He has been asking to link up again. But idek if i want to be friends at this point. What do you think?