Talking about other people you meet on other free dating apps in front of him. When you do this, you can't be too obvious. Don't say "I'm with Mark all weekend. Mark is so sexy and I like him a lot." Otherwise he will find that you just want to make him angry or you are just more into Mark. Instead, you can say, “I went to a new restaurant with Mark the other day. The food there is so delicious. Mark even invited me to another same restaurant that he thinks it is good too.” By telling him this, he would know that he is not the only person you are seeing and he is not the only one for one night hookup. Also don't mention the name too often. In the course of the conversation, just mention the name of the other party once or twice.
Keep the conversation short. If you are chatting with someone you want to marry, don't spend all your time with him. Talk to him for a few minutes, then tell him you have to go, whether you are going to class, going to see a friend for a tinder hookup, or doing nothing. If he thinks he can talk to you for hours until he has to leave, guess who has power in this relationship? Definitely not you. Even if you really like him, you can't stop immersing in him. Force yourself to leave.
When you talk to him, don't put 100% of your attention on him. Let him know that you are thinking about something else.
Keep your plan mysterious. If he asks how good your weekend is, you can give him a frivolous smile and say, "it’s great." You can let him guess what you mean. He might think you and another man spent a wonderful time in the cinema instead of celebrating your birthday. If you must go, you don't have to say: "My dentist is here!" Instead, you can say, "I am late... I have to do something." He may think this is a date.
If you want to make him jealous, don't make things public. Let him guess what you can do and create his own scenes that can make him jealous!
If your goal is to date him, don't let him stay too long. If you want to marry him or you want him to come back, that would be great. But if you want to marry a man because you really like him, and think that this strategy will attract his attention, then you have to know your limits. At first, a little flirting and jealousy is fine, but if you do too much, he may think that you are not interested, and you are not a good person, nor a marriage material. You will be a girl who can get along with every man. Once you start a real relationship with him, you can save all the games and tricks and start focusing on manage your relationship.