He told me he's been looking at rings!

To be fair it was 3am yesterday morning and i was kinda drunk but i remember it perfectly.

See a while ago, his brother told me my bf was thinking about proposing (his brother was drunk at the time). When i asked my bf about this last night he denied it...but then said hes been looking at rings but hasnt found the right one yet.

Just so you all know..this is a guy who says he doesnt believe in marrige.

Am i overthinking this? What if he decides he just wants to carry on as me are?