You’re not dating your brother! You’re dating someone who [i]resembles[/i] your brother. [b]Giant[/b] difference!
Lots of time people who have dated for a while, or who are married for a while begin to resemble each other. Many men find that either consciously or unconsciously they choose wives who resemble their own mothers. Women do the same thing with their husbands and fathers.
In fact, it’s very normal for people to want to be with a boyfriend or girlfriend who “fits in” with their family — whether it’s religious, ethnic, racial, social or intellectual similarities. So, it’s not a surprise that your boyfriend looks like your brother.
So, since you suddenly realized that your boyfriend resembles your brother, I’d cut yourself a break if I were you. Your boyfriend and your brother are two entirely different people. Resemblances happen and are normal, but your boyfriend is your boyfriend.
Enjoy your boyfriend. He’s a unique individual — and he’s yours! 🙂