I have a third date with a girl this weekend. So far all we have done is make out. Today I get an email saying, “After a birthday party, we can go back to her place and chill.” she adds, " Are you ok with my room mate joining us?"

I respond: ok, that’s cool.

But now I am remembering about 75% of the pictures she’s sent me of herself are with her room mate as well. Am I over-thinking things here?