Will my boyfriend get sick of sex?

eLLee • Emilee. 25. Married. TTC #1. Follow my infertility journey on YouTube down below!
I just recently got the IUD in and we have been having sex every other day for a week. Before that, we would have sex once a month. Maybe less. I am just kinda nervous that he is gonna get sick of sex. I guess I'm just kinda nervous because he told me he dated a girl for 4 years and they had sex constantly and he got sick of it real quick. 
We are getting married in July and have been together for 2 years.