Intensity of commitment or too much emotional intimacy too soon will make a girl run if she is the type that takes it slow with the feelings portion of relationships... which is actually the sane route.
If you mean intense and vigorous sex... I have no clue. Except that from what I understand a lot of women prefer romance and tender lovemaking to a good degree. A good way to see what this looks like is by watching men porn vs porn made specifically for straight women.
This is something I won't even begin to understand... my brain is just not wired that way. I think porn made for women is lame... as is the slow lovey dovey sex thing...
That's my n-1 of course... everyone else's MMV.