my first response is... wow! anything with platinum MUST be a good idea. But then I wonder... what would jenny think? I think she would say no in this situation. maybe. idk.
I am pretty particular about what I will routinely put inside my body. I don't like chemicals in general. I don't like them in the air I breathe, in my food, or around my genitals. It's hard to say without seeing the ingredient list but I find most lubes like this rather gimmicky and it doesn't have the best interests of the vagina at heart. Like I said, there is a delicate pH balance going on in there. Throw it off and it makes the vagina angry and when the vagina is angry, ain't nobody getting any.
What the percentage of cases when someone pulls out and everything goes okay and not pregnant?
This depends on how successful the retreat was as well as where the female is in her cycle. The closer she is to ovulating, the less dependable the withdrawal method becomes. Typically this kind of birth control requires a lot of planning and communication. Wear a condom.
Do you question this because you think she may have feelings for you and you worry about giving the wrong impression?
Any friendship needs chemistry to survive so if there is "nothin" than what is the basis of the friendship? It can be trickier to have a functional friendship with the opposite gender, especially if one or both of you is single, but some of my most fulfilling friendships are with males and I can't imagine limiting my social circle to just girlfriends.