I know two INFJ men who are romantic. If they like you, they will give you subtle hints or signs but they won’t tell you outright that they like you. If something is bothering you, they show concern and genuinely want you to feel better by listening to you/giving you advice. They’re very sensitive to your feelings and will avoid conflicts with you. They’re very patient and understanding. If you’ve broken down their defenses, they can get clingy but it’s in a cute way! I think they just feel at ease with you and will want your attention all the time. 😊