Why is she acting funny after sex?

[SandandWaves]

if it was great that time you guys done it, it's because she likes you

[Dave31989]

so you're having friends with benefits type shit with your neighbor, like a common man slut

[Wise4myage]

Its hard to say, no pun intended. But why not ask her?

[anon1903]

You should directly ask her that. There's good chance for either