First one is to pee in the toilet at the beach, first time shows people peeking in, 2nd time they masturbate on her...
Not sure if higher libido change the scene
Second one starts where the guy/girl were having sex at the beach, if you try to get close she'll comment about it.
At some point those two disappears and there's sparkle on the floor there.
If you try to pick it up the guy will ambush you and make you give him blowjob.
Then once you get to 2nd city, there's a spot to the right of the city's south exit where there's another sparkle.
The conversation implies you can find him again later.
Third is the waitress job.
In the beach pub, at some point the owner will offers you the job, then you just talk to a customer when they get ! sign above their head.
After 4 customers or so you'll get something like a 'finale'
Higher libido can make her serve customers while naked and also change the finale accordingly.
And there's taking hits from enemies eventually rip your cloth (4 stages of it, full, tear, one breast out and naked)
