I’m just curious if they taught you in BJJ(if you really went there) that a guy can’t ask you if you would like to build a BNB with him???
Doesn’t sound goyish at all and by the time your up to it you should be comfortable enough together that speaking privately about getting married should be fine.
A frum ehrlich nice guy/yeshiva bochor would know how to ask you in a B’Kovodika way…Doesn’t that sound fine?