1. I have been selfish, to share all my emotions[love,anger,etc] rather than to bury them. -- To me, the second "to" doesn't sound right. I'd delete it, and also delete the comma after "selfish".
2. I have been rather selfish, to share all my emotions[love,anger,etc] than to bury them. -- Doesn't sound right.
3. I have been selfish, to share all my emotions[----] instead of bu