I was planning on attending a sport/hobby event - both to see the event and to meet up with a male friend who I know through the sport.
By the time he confirmed he and his brother (who I also know through the sport, though not as well as him) were attending, all the limited accommodation in the area was booked out. My friend immediately offered for me to share their tent (they sometimes camp at these events). I want particularly keen ( don t like camping, not a big tent, too stinky young men etc); my main priority not being "propriety" or appearances. So I asked my sister if she still had a tent and planned to take that and camp in a separate tent; until circumstances changed for my friend and they decided not to attend after all.
(For background/relevant info - I'm a mid 30s female, they are in early 20s; know them and became friends/acquaintances through sport ( older brother was my instructor). If they are in my area, we meet and vice versa. Exchange the odd message in a in a while. Older brother is in a steady relationship. Younger not at that time.)
My dp of several months found this (when I related the events/decisions) inappropriate - both the prospect of me sharing their tent at all and how it would apparently look to other people who know him and myself (I also met him through the sport in a roundabout way, but it's his children who do it, not him) including his sons and others (mostly male sport) attending.
I explained that I never really considered sharing the tent, though not for the above reasons, and quickly moved onto trying to get a tent of my own but he focused on that and seens to think I'm very strange not to see it as inappropriate.