I dont no if i want to marry him?

i have been going out wiv my bf now for 2 years and i love him so much. i have never wanted to get married and i know i dont want children.my bf has had a messy relationship previously and lacks confidence he knows i love him but i want to prve to him how much.Is marriage a good way to proce this. However i don't no if he wants to marry me because he is insecure and has been badly affected from his last relationship