Number 1 is spot on. Many times, in romantic relationships, people are selfish. They only think about what the other person can do for them. An easy way to tell this? Simply pay attention to what “love” means to them. If they express love strictly as a function of what the other person can do for them, who the person is to them and the benefits of being with that person, that’s a red flag. Most importantly, is that people fall in love with an idea of the person, a static image and not a dynamic, free flowing human being.