One of my new(ish) friends that I met through a hobby about 8 months ago invited me round to her house for lunch with her husband. Now I'm not a prude or anything, but imagine this: everything was normal, we'd just finished having lunch and she said to him:
"I really want an iPad. I know we're meant to be saving money but if you pick one up for me when you go out later, there'll be a blowjob in it for you."
A conversation then ensues where he umm-s and ahhs, says he would need more sexual favours than that and the conversation ends with her poking his tongue out, him saying "don't tongue me!" and her replying, "you've never said that before!"
I'm sat through the whole of this like 
Was this weird or am I being unreasonable to have felt really uncomfortable? I don't even know them that well (have only met her husband once before) and with just the three of us sat there, it was so awkward!
Woke up to a text from her this morning..."I managed to convince him to get me an iPad in the end but I had to agree to all sorts of sexual favours lol"
I know they're married. I know they have sex... but I don't want to hear about it. I wouldn't over share details about my relationships so I would appreciate the same (at least with this friend.) AIBU to avoid being alone with these two again?!