It's zero problem for me, as I don't have sex unless in a committed relationship and also can't even think of someone else that way when I'm in love.
That hurt to hear as I would think that as in love with me as he claims to be (and as I believe him to be), I feel like it's a bit loose to be entertaining the idea of casual sex when the girl you say you love and want to commit your life to is back on the radar. So this has led me to conclude one of two things: He's either implying he wants sexual freedom, or he's trying to play his cards right to get me to commit right now. I'm really confused and upset and don't know how to handle this situation.
Those 2 things might be valid for someone who doesn't have sex unless in a committed relationship, and can't even think of someone else that way when they're in love.
They're total bullshit, however, for someone who has casual sex (to any degree; including sex with friends -aka people you love platonically, not romantically- & sex as a sport -people one doesn't have any feelings for whatsoever- as two extremes on the spectrum), or who can be completely and madly in love with one person, but can still very easily think of other people on sexual terms.
So, if he's just like you, maybe he's jerking you around.
But he doesn't sound like you. He sounds pretty honest; it would be hard, but he could do it. That makes perfect sense to me.
Maybe try turning the question around if you can't wrap your mind around sex outside of a relationship? Is there anything in life that would be hard, but you could do it? Not eating anything sweet for several months, maybe? No chocolate, no "healthy" deserts, nothing indulgent? Or maybe getting up 2 hours early and going for a run, regardless of weather, if you normally bliss out sleeping in? Or something else? Something that, if asked of you you
could do it, but it would honestly be difficult. No cheating. No birthday/wedding cake at an event you didn't plan on when you agreed. No sleeping in because you were out late for a shindig or medical emergency. Absolutely no excuses, freebies, or slip ups.
You might say sex is totally different than cheesecake or exercise! ... But for many of us? It's really not. It's a component of a relationship, the same way that 100 other things are a component of a relationship. And also outside of a relationship. If I'm in a relationship I'll only be having sex or dancing with 1 man. If I'm not in a relationship I may well be having sex or going out dancing with many men. It's not what defines the relationship, or why I love them, or how I love them.
To completely cut sex out of my life? Is a really, really big deal. Is there anything in your life that you do both while in and out of a relationship that cutting it out entirely would be a big deal?