Questions about example sentences with, and the definition and usage of "連れ添う"

According to Japanese dictionary, the term, 連れ添う , is used to live with together as husband and wife. 夫婦として連れ添う。= The husband and wife live with together. However, we, a lot of Japanese, use this term like this 私は彼を全く知らないが、彼の病院まで連れ添う。 = I completely don't know him, however I accompany him to the hospital. we use 連れ添う like above sentence, it doesn't matter if they are husband and wife or not. This is just tips. 連れ添う is quite polite word, we, a lot of Japanese, rarely use it, we use 一緒に居る instead of 連れ添う. if any question, ask me.

『連れ添う』→一緒にいること。 例：夫婦で連れ添い人生を送る。 例：彼女を連れ添い映画館に入る。 『連れ込む』→一緒に(どこかへ)入りこむ。 　　　　　　　（片方の人がゆうどうするイメージ。） 例：私の家に彼女を連れ込むつもり。 例：好き子をバーに連れ込んだ。これから口説くつもりだよ。エヘヘっ♡

ほぼ同じ意味になります。 連れ添うは継続して結婚生活をおくること、結婚するはこれから一緒に結婚生活をおくることになります。

連れ添う means “live together as a couple” regardless if they’re married or not. Whereas 結婚する is officially “married” but if they live separately you cannot say “連れ添う” even though they’re married. 長年連れ添った(×結婚した)相手と別れた。 I broke up with my partner who I’d been together with so long. 結婚して(○連れ添って)もう20年経つ。 It’s been 20 years since we got married.