Alright MN, I'm here for your honesty. I'm a bit jealous of DH's friend and DH's realtionship with her. AIBU? Some details changed as they're outing.
DH has a friend, Sarah. They've known each other since uni, they both studied competitive programmes, let's say in rocket science. Sarah has gone on to have a prestigious career and earns well. She's also quite beautiful and stylish. She is married with DC. DH chose an alternate career (civil service) and has done well through the years but doesn't have the life that Sarah does. They've never dated or had a romantic relationship but have kept in contact over 20 years. We moved back to DH's hometown where Sarah also settled and they have seen each other every couple of months, sometimes as families, sometimes they go to the pub alone.
Several months ago, DH and Sarah went out alone. DH came home round 23:00, not too late but I could tell he'd had a few drinks. He doesn't drink much, maybe a pint or gin and tonic after dinner but never more. The next day, he said he was going to stop drinking and he felt he'd had too much. He didn't see Sarah for several months afterwards and when I asked how she was doing (since it seemed a long time since he'd mentioned her) he sort of brushed it off. The next time he saw her was together with our families. I noticed that she looks at DH with big eyes and is quite complementary of him ("oh you're so lucky to have a partner who does X/Y/Z."). She'd never been like this before and never looked at him that way, it made me feel a bit uncomfrotable because she really looked at him with longing and was sort of fawning over him. He hasn't seen her since then, until he told me he made plans to see her next week.
I will admit to being a bit jealous of her, she seems so perfect (she is beautiful and stylish and always looks so put together, she is brilliant (she's a rocket scientist!), her home looks like a page from a magazine. I've never felt this way about any of DH"s other friends (he has other women friends and I'm not bothered by it). I asked him once about their relationship and he said "if something were going to happen it would have happened already," which wasn't exactly reassuring to me?
AIBU to be jealous? AIBU to feel a bit odd about the encounter?