Let's see the available PC girls are

Gryffindor: 
-Willow Matthews (-AcE-)----------------------------- Year 5
Very shy and timid so she'd probably be difficult to chat up 
-Samantha Carlson (paigesweetheart)------------ Year 5
Popular girl

Ravenclaw:55
-Olivia Nicole Rigsby (nattylight1992)-------------- Year 5

Slytherin:4
-Acacia Cornet (Rune_Alchemist)------------------ Year 4
Would most likely use you as a dummy then poison you for kicks

Hufflepuff:
-Grace Goodspeed (RumikoOhara)---------------- Year 5
Popular girl and Mothering type

-Clarice Magdalene Dashwood (Emma)------------ Year 3
Stay away or you'll see what the Badger on the Hufflepuff crest means when her Auntie confronts you

-Elina Hirasawa (liferusher)--------------------------- Year 4

There are others but they're not listed yet