I need tips to seduce my friend's girlfriend.

Hi I'm Mayo and she we're going to call her 'the brunette'. Anyway, the thing is that cutie has been giving me looks for a while now that make my head spin and this one has a baby (and I'm really good with kids) so when I play with this one, she looks at me with a tremendous slut face and today, casually, we were taking some mates and she started looking at me like that and then she got all worked up but I was holding back because my friend was giving her a kiss and before I left, she spread her legs in jeans that, I don't know how that little thing marked itself... since we hooked up in their room, we were lying down. Then I wanted to know if someone could guide me a bit on how to get her, I promise to keep you updated on everything that's happening and also, I'd like to improve my storytelling.. Greetings, talk to you anytime!!