his ex texted!

lexii
me and my boyfriend were cuddling and his ex texted him out of nowhere. i have really bad eyesight and all i was able to see was her contact name. ( i honestly don't even know why he has her contact saved still ) it's probably like the third time she texts him just while we're together and has even tried facetiming one time! ( who knows how many other times ) and i always tell myself not to look because i sont want to know and end up regretting it like 5 minutes after when hes already deleted the convo. he always deletes all his messages and i don't know if i should bring it up. i believe him how he doesnt know why shes texting him. however i don't trust these bitches. i've asked him if he still has feelings for her and why they broke up and all that. but i have bad trust issues and insecurities. what should i do??