I don’t suggest you become paranoid and jaded. That’s not a good way to live. Going on a number of dates with a man in order to get to know him as an individual first isn’t being paranoid. It’s a healthy process. And if a man shows you or even verbatim tells you he’s not interested in anything beyond casual fun, then it’s your choice to date them or not. But it’s not being paranoid if you choose not to invite them over for sex if they don’t want relationship. It’s knowing yourself and knowing what you ultimately want. That’s not being jaded.
Sex could be fun with no strings attached, but it’s not fun when it ends up in tears that a man won’t commit/dating others/isn’t serious etc.
Hope, we aren’t saying you shouldn’t have casual sex. There’s zero wrong with consensual sex between adults. But you end up falling for these men and developing feelings because you aren’t really this casual chick with no emotions. You want more. But these men can’t and won’t give you more. Even this new guy. You already want more than what he gives. And he already shows you that he won’t give you more