<human>: Could you distill the essence of the text into 1-3 sentences?

My boyfriend says that when he slept with his ex 8 months ago that it meant nothing and there were no emotions involved. The only chemistry was sexual and that he no longer had feelings for her. I find it hard to believe given their extensive past.

I don't think he's lying, but maybe in some kind of denial. Which only frightens me more because if that's the case then there's no telling how far that denial could extent. This mostly concerns me because of how defensive he is of the subject, and why he would not be willing to admit that any emotions were involved considering they now have a close friendship. Or at least it was close until he began to date me and she dramatically lessened her communication with him.

Is it possible to have sex with someone emotionlessly who you shared 5-8 years of your life with, lived with, grew up with, and at one point cared enough about to tattoo their initials on your body? If you don't think so, any suggestions as to how to go about this already tense topic and try to uncover his real feelings? Or maybe I shouldn't do that? I'm very confused and nervous.
<bot>: Can you have sex without feelings for each other after being together for 5 years and then having been on and off for three years?