Worried and really need some financial advice?

Next year I will be done with college and I'm going to live with my boyfriend of four years in vt. Right now he is working full time and has moved back into his parents house to save money until I get out of school. I want to get a house after college and have a small wedding but I'm worried that we won't be able to afford it because I'll have a huge amount of debt from student loans and he's just plain horrible with his money. Besides spending it on his daughter he doesn't know where his money goes because he is constantly spending a few dollars here and there on stupid things. He'll save up a good amount of money but then something will come up like christmas and he'll spend it all on expensive gifts for everyone. He keeps telling me it will be easier to save once I'm back home. I'm really annoyed and worried. I also told him I'd rather invest in a house then live in an apartment and never have any money saved. What should we do? How can we have a house and wedding?