I'm way too invested aswell 😁
I have a theory
Admittedly it is from my very amateur armchair psychology degree (that I acquired from watching Opera)
It seens to me Raquel is quite jealous of the other girls. Her way of dealing with this is to try to be like them by snogging men they like.
First Katie (Shwartz) , then LaLa (Oliver).
I dont think she actually likes these guys, she just thinks she'll become like the other girls by being with thier men, IYSWIM.
My theory is, her next guy is Sandavol. Whereas the other guys just treated her as a quick snog, Sandavol is so narcissistic he believes she actually likes him.
So, the affair wasn't really a "love affair". Just Raquel wantng any man that belongs to any of the girls and Sandavol narcissism thinking he can have any girl and all girls love him.
in my opinion, it could have easily been Scheana's husbsnd - whats-his-face.
if Sandavol had turned her down, i reckon she would have tried it on with him next.