Always love yourself first, be cautious of giving love too soon, you should make a conscious effort to make sure that you're getting loyalty, honesty, respect and dedication from the other person before you give in to the emotion of love. Keep in mind love can't be turned off like a faucet if the other person becomes problematic. How many times have you heard of someone staying in a toxic relationship they obviously shouldn't be in and the reason is that they love that person? In my opinion, you don't have to be in love first for a marriage to work. Make sure the other person is worthy of you loving them first.