One of my buddies whom I've known forever has recently started a relationship with a person with whom he is, by his own admission, very sexually compatible. He's very happy as it can be difficult to find someone whose libido and preferences match your own. While I'm happy my buddy's having a great time (and seems much more relaxed! ha-ha) he's told me that he's in love and is thinking of marriage. I think he's mistaking great sex for love and they're just not the same thing. Love and sex are linked, for sure, but they're not the same. His new partner travels quite a bit for work so, cumulatively, they haven't spent much time together and, when they are together, they're busy making up for lost time. I don't want my friend to get hurt if it turns out, as I suspect, that his partner is just enjoying a fun, physical relationship with no thought (or expectation) for the long term while my friend's out shopping for engagement rings. I worry that if I say any of this to him he'll think that I'm jealous and unsupportive. He's my oldest friend and I just don't want him to set himself up for a messy, painful fall. Maybe I'm projecting my own issues onto him?