How do I get out of this situation?

There is this weird guy at my college who I used to go to church with. I got to college with him and he is in my class. I dont go to that church anymore because it was full of crazy people, judgemental people, and pedophiles. It was a borderline cult. He got my number from my mothers friend. Instead of just asking me for it. Now he keeps texting me wanting me to go to his “youth group” meetings at mcdonalds. For weeks he kept being nosy and asking me what my scedule is giving me no explanation for why he wanted it. He even hunted me down at school. I finally went to one to avoid being rude and to get him to leave me alone. It was not a “youth group meeting”. There were only 4 people there. Him, me, and two old men ages 40-65. I was the only girl there and the only teen. I felt very uncomfortable. All he did was talk about himself the whole time and not let anyone else speak unless spoken to. He wants me to go to the next one. I am going to come up with an excuse not to go hopefully he will take the hint.