19 year old and a 15 year old

Joe223
Ok well I made out with a female friend of mines little sister last weekend. She's 15, turning 16 this year, and I just turned 19. Ok well at the time I thought us kissing was probably a bad idea, but now that iv thought about it Iv decided that I like this girl (shes cute, good to talk to and fun to be around) and I'm thinking about asking her to coffee. She doesn't look like she's 15, in fact I actually thought she was older then her 17 year old sister. What would people reactions be to this? I don't know how her mum would take it, but seeing as her 17 year old sister is going out with a 23 year old, I can't be sure.

What do you guys think?

Also, before you start saying stuff like statutory rape and that. I'm in Australia, age of consent here is 16, and I have no intentions of having sex with her for at least a year.
Updates
+1 y
That last bit didn't come out right. I mean that I'm kind of a wait for someone special person. Most of my other relationships have been very slow and we don't usually sleep with each other until a good 3-4 months in.
19 year old and a 15 year old
2 Opinion