I kind of feel you, OP. My dad and my boyfriend have many, MANY things in common. It makes me wonder if something's wrong with me.

I red this thing that people tend to be drawn towards others who share similar traits with the important people in their lives. For example, a girl might be drawn towards someone who resembles her dad or brother, because that's what's she's comfortable with. So, I guess it's not uncommon. :/

I've had so many people think my brother and I are a couple or married. so I feel your pain.

Look at it this way; OP's mom found her dad attractive, so if her brother looks like her dad then that just means OP takes after her mom.

I'm the opposite. My brother and I look so different that we're often mistaken for boyfriend/girlfriend. It's weird.

My mother once showed me her graduation photo from college, where she looked exactly like my then girlfriend. Twenty years later, Mom still brings it up.

My cousin and my husband look so similar that a few family members often confuse them, both in photos and in person. They could very easily pass as identical twins. You're not alone OP! :)

Been there

When I first started dating my ex husband people used to say we looked like brother and sister, creeped me out - my ex was able laugh about it and used to bug me about my mom cheating on my dad with his biological father (my ex's father split when he was a year). Can understand where youre coming from.

Now imagine them having the same first name .....

One of my good friends is about to marry a guy that could be her brother just from how he looks. She gets pissed at me for bringing that up.

Ah, psychology at its finest.