Why do guys feel they have to say they love you after every phone conversation?

It depends on to whom you are talking to. I end my conversations with my adult daughters (37, 32 & 25) by telling each that I love them and I'm proud of them and this is a way of me expressing my love for them. When I was concluding a conversation with former wife (recently divorced, I was totally aware of her fear of abandonment, insecurity and low self-esteem. Also, I really do love her (still do, even though the Petition for Divorce was entered by me. Oh, by the way.... Many guys are really loving, caring people, and when a guy does this, he is revealing a side of himself to you, that he usually wouldn't to someone else. Yes, there are a lot of "bad" guys out there who have learned how to play the game. Who are they? Don't know. That is up to you to determine, with your intuition, discernment and doduligence.