Wife looking at ex?
 

Do you think i should be worried over the years I've used wife's Facebook account for various reasons in her search history is her ex boyfriend from years ago I've seen this mabe 10 times now in her search history so she must frequently look him up on there. Should I be concerned what do you guys think?

I would not worry about this on its own. Has she given you any other reasons to worry? If you looked at my Facebook history you would see I have looked at my old fuckbuddy's profile. She was my first and is my best friend's older sister. We fucked for about five years when we had the opportunity but never were in a relationship. She in her mid 40's still looks amazing (at least in clothes as I haven't seen her naked in almost 20 years). I see her at social events from time to time and we are friendly but we both have families now and that is in the past.

Nothing to worry about there. Everyone checks in on former partners or even friends you grew apart from. No reason to think she misses him or anything. But you’d know best if she’s giving you other reasons to feel jealous.

It's easy
 

Just ask her. Tell her the truth about how you found it and ask her if she's been wondering about him and what she feels about him. Then you won't be stressed about it, and your relationship with your wife will be stronger.

The time to worry is when she changes her password

I'm not on FB anymore, but my missus often snoops on her ex - they were engaged for a couple of years before she & I got together. He's a bit of a prick and she likes to snoop now and then to see what he's up to.

It's close to 20 years ago, but I guess there is a morbid curiosity - she often shares stuff she's found out (they met at school and have a lot of mutual friends so it's not unusual to see them both tagged in a post).

Doesn't bother me in the slightest. It's normal to think about your past and your exes. Doesn't necessarily harm your current relationship unless you act on your curiosity.

I remember reading an article back in the late 90s that blamed Friends Reunitedfor the divorce rate going up. I'll bet FB has had an effect on that too :D