Do not marry the first girl you fuck (or the first boy, either way, mixed ways too, anytype anyway).
Go live with him/her, share an apartment (do not buy together) for months, live together for some time.
Possibly, break up and meet more people, rinse and repeat until you understand:
- what you WANT in the other person
- what you EXPECT from the other person
And more important even, learn to understand the other person for what he/she is and not what you think he/she is.
I installed from fdroid, I expect it to be still available as far as it will work…
And I guess somebody will build and keep publishing it just not on google play, which is anyway a cesspool nowadays, so no big deal.