[Kyriefurro]

You indicated that villain is "very aggressive." I think most of us have assumed this means Loose Aggressive (I know I did).

An opponent like this could be pushing with:
Top pair - with or without a good kicker
Middle pair/decent kicker
Bottom pair/good kicker
A flush draw
OESD
A mid-sized PP
Absolutely nothing

You are already ahead of an aweful lot of this, and if you aren't you have a ton of outs that will let you catch up.

Even if villain is TAG or a thinking LAG he may be pushing because he thinks his hand needs to go to showdown. If that's the case then all his chips will still end up in the middle by the river. By pushing now instead of dragging it out he adds some nice fold equity to the mix.

The bottom line is that your chances of winning this hand are very good.