tearing during sex

i think i posted about this before but im still having the problem of tearing when me and my bf have sex . its only when hes trying to put it in because after it goes in its fine . i get really wet so i dont understand why it happens i think i’ll ask him if we can try lube even though i dont want too but if that doesnt work does it mean i have a problem down there? idk , please help . i like having sex with my man but we can only do it every few days at least because i always tear and it has to heal but then it just does it again . when we first got together 8 months ago everything was fine there was no problem putting it in , we could do it multiple times and i never tore but now i’d say for the last 3-4 months i have been tearing