After that, everything else in Cassandra's life went by in a blur. Cass would chat with Andrew every time they had chemistry, getting closer by each passing day; telling one a secret about themselves that the other had never known, the occasional accidental hand touch, all the while Cassandra's feelings for Andrew growing bigger and bigger. (Without Victoria knowing of course)

Cassandra also kept receiving notes and small trinkets from her anonymous admirer, a necklace one day, a tiny teddy bear another, etcetera. This made her more eager to find out who this mysterious someone could be, and to her, it seemed like the only person it could really be was Andrew. The more she told him about herself the more the gifts related to what she had said to him before. She didn't confront him about it though because she wanted him to be the one to tell her himself; she thought it would make the whole event more interesting and romantic.

During that time she also would try to tell Bella about any new gift that her admirer would give to her. Bella also knew about Cassandra's hunch about Andrew being the one and supported her fully on the idea. It became routine for Bella and Cass to talk about her admirer before any Mathinators meeting and try to make any connections they could out of the tiniest of things. And after Bella's incident, James made sure to keep his distance and Cassandra kept trying to figure out what Bella had against him.

Everything was running smoothly for a while until things took a dramatic... turn.

As for what type, well I think that's up to Cassandra (and you) to decide.