MY BOYFRIENDS DELETING TEXTS what should I do 😩😒

Okay so earlier we was in the middle of sex and his phone lit up I saw a text from some girl called "shan💛" saying text me xx... I didn't say anything because I thought oh it's probably nothing and it would ruin the moment! After wards I bought it up and he replied what text I haven't got any texts and showed me all of his messages (he had deleted it) so I said go on your contacts and I bet there is a girl Called Shan with a yellow heart emoji and there was!!! How would I know he had a contact named that if I haven't seen them text?? He's still denying the whole thing😒 idk what to do