What are some things to do to make a guy ask you out?

Me n this guy hav liked eachother since january,but he hasnt asked me out cuz he saids it takes a long time to trust sonebody.and he dosnt want us to breakup like all of his other relantinships and I also asked him will he ask me out in the summer and he said Maybe he might.but we act like a couple and stuff.and he saids he wants us to live together when we get out of highschool..will we ever become something??