getting jealous in a relationship is a huge turn off for me. I had a possessive ex and it was annoying. When we go out and I tell DP that some dude has hit on me he just laughs, it really doesn't bother him. It doesn't bother me that it doesn't bother him.
DP will point out certain girls and say "I like her hair, she is a nice shape, i like what she's wearing etc." Do I feel jealous? No.