Honestly, ya.

It's clearly eating at you.

edit - I meant to add "And I would want to hear about something that was bothering my partner even if it was potentially upsetting." I don't really think this is though. The air mattress disappearing is...peculiar and might make me sort of question that person's intentions but I dunno. If your boyfriend is a mature person he'll see that as not something to be upset or concerned with you about.