Quick Fix: You need to start pacing the relationship.
Do : Don't see him more than once or twice a week, don't talk more than ten minutes on the phone, don't open up too fast, or introduce him to your friends before he introduces you to his.
To avoid repeating the same mistakes over and over again, first you've got to recognize them.
Having trained with authors, Ellen Fein and Sherrie Schneider, I recommend their "three days in advance" rule - e.g.
he calls by Wednesday night to ask you for Saturday.
Let a man treat you like a fast food drive-thru (put his order in at the window then pull up to get his grub) and that's how he'll view you.
Fancy restaurants - and fancy girls - require reservations made well in advance. Quick Fix: To make sure you're his "Plan A" girl (not the "Plan B" girl he calls after his first choice turns him down), I recommend setting a firm cut-off limit after which you're "busy" - period.
As Greg Behrendt and Liz Tuccillo exhort the lovelorn in : "Don't waste the pretty!