Need advice: Is my friend and his wife hinting at

I’m not sure how to start this. I guess over the past little while I’ve been getting a vibe from a friend and his wife, and I’m not entirely sure what it means, if anything. I was wondering if anyone could help me figure it out.

The whole thing started pretty innocently. My buddy’s wife had a k**, and afterwards he told me she’d been feeling a little self-conscious about her about her looks. I thought that was a little ridiculous, because she’s a good looking woman, and if anything she was now thin with curves and big boobs (she didn’t have those before). Anyways, when we’d hang out he’d often comment on her appearance in front of me, and then look my way and ask “Right?” Essentially trying to get a complimentary reply out of me for her. It felt a little forced at first, but it happened often enough that the follow-up comments became second nature, even if he’d commented about something specific like her breasts or ass.

Privately, he’d also bring her sex life a fair amount. And not just mundane things. He told me all about the porn she likes to watch (rough gangbangs), stuff she liked to do in bed, where she takes cumshots, and some sexual stories from her past that essentially can be summed up as “She was a slut” before they were married. He’s also shown me some flattering pictures of her exposing her cleavage, and repeatedly talks about how awesome her tits are now.

It was around this time I realized (and it continues to this day) that when I visit, she never wears a bra and is always wearing tight clothes. Her nipples are ALWAYS erect and there’s no missing them. The other night she came out in her revealing pyjamas (braless, thin top, short shorts) and my friend called her back into the room so we could look at her because she looked “so hot”. Another day she did her exercises in front of me (again, braless) that mostly involved bending over in front of me, or arching her back like crazy, emphasizing her boobs.
Finally, pretty recently my friend asked me if I ever checked her out, and before I said anything he told me he didn’t care if I did. I told him I’d tried to keep it respectful because it was his wife, but I couldn’t help but notice some things. He again reiterated that he didn’t mind, she was hot, so I could check her out all I wanted.

There’s also a bit of a backstory too. When she drinks she can get a little sexual and he’s always played on that. At a party a few years ago, while they were dating, he encouraged her to take off her top and bra in front of a bunch of his friends, and she did. He watched me check her tits out back then. Another night after she’d been drinking she told us she didn’t know why she had her clothes on, and then promptly went topless. That same night, he also pulled her pants down in front of a bunch of us, bent her over and yanked the fabric of her thong so tight it was pretty much bare ass and exposed racing strip.

So that’s it. Think there’s anything to it? Would appreciate any advice.