Help me analyse where I'd go wrong.

So drinking with a mate at the bar. Initially, spot these two chicks buying drinks. He says their alright but not as great as his masseuse he had earlier that gave him head. I said then his masseuse must have been pretty.

We continue drinking and they end up sitting near us. I don't really pay attention and we keep talking shit, drinking and snacking on chips. Then he goes to the toilet.

I start looking around as he goes to the toilet and one of the chicks says hi. I wave back and say Hi. She smiles and indicates me to come over.

So we start chatting I ask about their names and where their from. Their from anothet state. I mention my friend and my work bag needing to watched over. I bring them over to the girls table. My mate comes back. I ask him does he want another drink and the girls. One wants a mai thai or said no she still has her wine.

I go get a drink. My friend keeps talking to them. I come back with 2 beers and tell the girl I forgot her drink. Then said just joking the waiter will bring it soon. My friend told them we are engineers. I said I worked at top secret organisation i.e. government and last time I said that the stripper said she worked for Stassi (german secret police) and laughed about it.

Then we played a game of guessing our ages. I started we took turns. The one that said Hi to me was 18 and her friend was 21. I took the opportunity to shake her hand when she said she was 21. They found out my friend was 44 and I was 43. She initially though I was 33 which I laugh and said I'll take that and said talking to you chicks makes me feel younger already. I saw her hand had tattoos and I said I love tatts. She said she had one on her back and I said show me which she obliged.

Then 21 year old said did we have partners? She said her friend was her partner and they moved her less than a year ago. I said have you girls ever been with a man. The 21 said yes. But her 18 year old gf no. Anyways, my friend says he has wife and kids. I say I am separating. The 21 year old says doesn't really matter maybe not to dig into wounds.

She gets some texts on her phone. Eventually they say they need to leave and meet up with some friends.

To be honest. I didn't care if they were together. I just keep plowing along until I bomb out.

Anyways my questions are was it a dare for 18 year old to open? Are they really lesbians? Did I fuck up about talking about strippers? Did I fuck up buying them a drink? Did we fuck up about our ages and existing relationships?