I have boyfriend problems. can anyone help me? please!?

Kay, im 17 years old and i finally got a boyfriend. i want us to take it slow and get to know each other, but what he is looking for is a long term relationship someone who he will marry. He has already told me he loves me before we were going out and i got kind of guarded because he knows nothing about me. We've been going out for a week now and he wants me to meet his family and he wants me to say i love you. i explained to him how i am and he is still kinda pushy. Plus when im on the phone or when he calls i dont get excited to talk to him how my friends do with their boufriends. i dont know what to do. And my mom wants me to make this work because she doesnt want me to end up a single parent like her and not have a partner. im sooo frustrated, irratated, and confused. ohh, i dont like PDA.*public display of affection* and he does and my mom is always saying hold his hand kiss him. blah blah blah. Can anyone tell me what to do?? Why i feel this way?? please.