Expert:
Justin Lehmiller, social psychologist at Harvard University (USA)
1. Will sex ruin your friendship?
The risk is great, but real pleasure (did you really want it?) Can smooth out possible roughness. In addition, other experts on human souls note: people who have agreed on "friendship with bonuses", as a rule, still put friendship itself above sex.
2. Is it really interesting for her?
You can't help it, you have to ask her directly. They usually say something like, “I hate to complicate things, but actually I'm just sure we could have great sex. How are you?" Laughing back? Well, it happens.
3. This does not oblige you to anything, does it?
This is a question for both of you. Agree with her on the shore, how do you see it: a one-time action or a protracted sex marathon? If you are sleeping with someone else (and you probably do), she should know about it - you, if you have not forgotten, are still friends, which means that you have nothing to hide.