How To Fall In Love

I feel like I chose my husband for some reasons in the past and we are together since 7 years now but I’m not sure that I’ve really been in love with him. I would like to know if there is a thought work to do to fall in love with someone because It seems like in my mind it’s something that couldn’t happen on purpose… I feel confused about the thought work in that case… thanks in advance for your advices !