I have a fiancé like you, who I met at a wedding. She has known my sister and her girlfriend for years. We just never made the acquaintance. I love her because she is a good person. It has taken me 64 years to figure this out. Crushes are of no use because they are one-sided. There are two variables you should shoot for: A. Someone good to the core and B. Someone who loves you and you know it. C. There definitely has to be attraction on your part too, but I fall more and more in love with her because of how true and beautiful she is. Love is an action toward, according to Eric Fromm in The Art of Loving. You take someone with a pure heart and you love her back, in my case, and you see something beautiful arise. I need complete security and so from dating apps, I doubt I could ever be sure of someone's background, except that I do have deep friends I met on dating apps and I know them well by now.

In the end, your safety and success comes from loving. Just love. And also, don't stick yourself out too far, to be then broken off because we all know when we are being used or we give too much. Relationships too have to be with people we are truly compatible with. This is a great piece I just read about that: https://medium.com/mind-cafe/the-5-factors-that-determine-compatibility-in-a-relationship-dbd8428fdffc.