There is only one season.
For the manga there are two "mamotte lollipop" and "modotte mamotte lollipop", but for the anime there is 1 season with 13 episodes.
"Modotte Mamotte Lollipop" is a sequel to "Mamotte Lollipop." The main difference is that "Modotte Mamotte Lollipop" continues the story of the characters after the events of the original series, focusing on their further adventures and relationships.
I watched mamotte lollipop episode 3 in English on this site! http://www.gogoanime.com/save-me-lollipop-aka-mamotte-lollipop-episode-3
There is a 13 episode series of "Mamotte! Lollipop" .
Mamotte means save me in Japenese and its called save me lollipop because of the lollipop Ichi gives Nina to protect her. He put a defense spell on it.
The last episode of Mamotte! Lollipop is episode 13, "Comeback! Save Me! Lollipop".
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http://www.gogoanime.com/save-me-lollipop-aka-mamotte-lollipop-episode-1
http://www.gogoanime.com/save-me-lollipop-aka-mamotte-lollipop-episode-3
There is no season 3 or season 2 for the Mamotte! Lollipop anime.
There are 13 episodes of "Mamotte! Lollipop" ; see relevant link .
Mamotte! Lollipop has 7 volumes but, there is a sequel serries called Modotte! Mamotte! Lollipop. (I don't think Modotte! Mamotte! Lollipop has been published in America yet but, you can read it online.) If you want to know how many volumes are in any other manga serries then just go to www.wikipedia.com and type the name of the manga in the search bar (but you have to spell it right or it won't come up.)