He Looks Like My Ex!

So there's a guy at my work who's been crushing on me and he even went as far as to ask me to grab something to eat with him after work. He's very sweet and funny, but he looks exactly like my ex, I kid you not! Only difference is that he's a little taller and there's a bigger age gap. I don't know this guy that well nor am I emotionally ready to commit to a relationship at the moment, but is that weird that I attract guys who look like my ex???