<human>: So recently me and my boyfriend went through a rough patch in our relationship. He was behaving weirdly and it all culminated in him telling me that our relationship was all wrong because "I'm so loving and kind and deserve someone better." He's gotten better now and started behaving normally and treating me amazingly.

Recently we were chatting. I'm going on a research trip soon for a while and I was saying I was going to miss him a lot. He responded with saying "maybe you should just pretend you're single." I was amused at this point saying "you're lucky you're dating me and not someone else! A lot of people would take that as a free pass." He was totally serious though. He told me that maybe I should take it as a free pass, he's not going to know what happens anyway, and he'd like me to enjoy myself. At this point I was just flabbergasted!!! I'm the type of person who takes sex very seriously and I'm completely uninterested in cheating. There are attractive people on my research group but I have zero interest in having sex with them. I love my boyfriend.

I talked about it to him more and honestly it sounds more like a self esteem issue than a kink, but I'm not sure, and he isn't either. He says he gets off the idea of me enjoying myself? I enjoy myself with him though! It ended with me telling him that he would probably be upset about it if it left the fantasy realm and he just went quiet about it. I thought I'd get an outside perspective.

Can you summarize the given text in a few sentences?
<bot>: Not sure if bf is NTR or just has bad self esteem issues. Not interested in sex outside the relationship. What should I do???