Your first boyfriend is usually going to be special, but, in this case, what started as a lovely partnership turned into something colder quite quickly.
Maybe your hopes and ideals were rather high, or maybe he really was too moody and too lacking in affection. Either way, he wasn't making you happy ~ the whole scenario wasn't making you happy.
You are bound to miss him, because, being your first boyfriend, he will always hold a special place in your heart.
Plus, you probably miss simply having a boyfriend ~ the romance, the fun, the attention, etc.
Think carefully.
Think back to your time together.
Do you think that you made the right decision to finish with him?
If he wasn't right for you, then you did the right thing, and, though you will miss him and miss having a boyfriend for a while, you will soon get used to the situation, and you will be free to meet the right person for you.
Of course, you may have decided that he
was the right person for you, after all ~ but if you
do think this, then give the matter some real consideration before going back to a relationship that you will not be happy in.
You are only 20, I think, so there is plenty of time to find Mr Right.
Good luck