Wife Gets Paranoid When She Discovers Strange Hairs In The Bathroom Sink

I don’t want to assume my husband is cheating on me and accuse him of such over something so ridiculous, but I’m driving myself into the ground trying to work out how the hairs have got there without my husband dismissing it as nothing.

During lockdown we haven’t had any visitors (that I know of) so can rule out his sister.

TL:DR I believe my husband is cheating on me because I keep finding long hairs in the bathroom which can’t possibly belong to either of us.

Update:

I ultimately decided against getting a secret camera set up because ironically enough I didn’t want to betray my partner’s trust. Though part of me wanted to get one to squash any worries of someone living in my walls, as per some comments said!

I did though plan to leave work early, which is something I’ve never done before. My boss allowed me to leave after a half-day.

Upon returning home, nothing seemed amiss. I was expecting another car on the drive or parked outside on the street. There was no other car I didn’t recognise. Quietly letting myself in, I was immediately confused. In the hallway, there was a pair of shoes I didn’t recognise, and not only that, they looked like men’s shoes.

Standing in the hallway trying to work out what to do; if I should sneak around or make my presence known, before I could decide, my husband walked out of the kitchen with two cups of tea. By my husband’s face it was obvious he was surprised to see me.

Playing along with naivete, I asked my husband how he could have known I was coming home early to make me tea? Expecting my husband to lie, he surprised me by sitting me down and explaining everything.