Hey, sounds like you care for her nearly as much as me. I'm totally smitten with her so I watch her very closely when I can, I don't agree with the unprotected sex but I'm getting on a bit and out of the loop now ,
I think she's a bright girl, apart from arranging a date at 3 in the morning a few weeks ago. She must feel that unprotected sex with Miguel isn't an issue. To me they look like a good couple and it looks like a real relationship (unless it's set up by RLC....joke )
I don't think she's flirted with anyone since she's been with her boyfriend, certainly not that we can see. A bloke sitting with his legs over you isn't classed as flirting in my world...