Will this guy get sick of me

elise

So I have met this guy at work and we are both really into each other but I’m worried once I have sex with him he will move on because both me and my friends have had that happen multiple times. I feel like I should wait a while to have sex and try get to know him really well and hope that he won’t ditch me after we finally do it but I just want to know what you girls think would be best?