My ex boyfriend texted me to meet him in the library a week after breaking up with me. What does this mean?

For me and my ex boyfriend it was love at first site. We met outside the library in october 2007 and instantly hit it off laughing and joking, it was the first time I've met a man and felt like I'd known him somewhere before because it was so easy to talk to him...and he admitted to feeling the same for me....we met randomly a few times after that at the hallowean party and around campus and he was very keen but I wrote him off as a bit sleazy as his drunken chat up line was "Your coming back to my place to smoke some weed" lol...in january he asked me out to dinner and i was pleasantly suprised. We were inseparable until April when his druggie friends criticized me for not wanting to smoke weed with them...I tryed to cut my boyfriend down as he was becoming unpredicatble and we were argueing about this a lot but they won and he broke up with me. Now a week later he texts asking me to meet in the library...what does this mean?