Is he sneaking ?

My bf just asked me what would I do if He got another girl pregnant . This is the second time he’s asked in a month and a half . The first time he said it in a joking way so I’m like I’d leave your ass and we laughed about it but given he asked again it’s starting to worry me . I’m like you know this is the second time you’ve asked me this right his like really? So I’m like why u keep asking he’s like just wondering and he forgot my answer I’m like yea what would you do ? And he’s like first of all I’d never take that chance In loosing you but if you really want to know I’d have to find the guts to tell you and hope you and the other girl would be like friends. I told him not in a million years I’d leave you and you can be with her and he said ok I got it and there was awkward silence.

I never check phones but idk him asking that rubbed me the wrong way . Got me thinkn I should. What would y’all do ?