7.c3 seems to win material (7...Ne6 8.Qxd5)
Lolli attack Nxd4!? > fxd4
Why would black play 5. ... Nxd5 in the first place. It is a serious blunder and black should lose after it.

alot of people are sugjusting the fried liver, but the lolli offence has statistically a greater win rate than the fried liver, atleast thats what i have been told.
So the typical lolli attack goes
how should white respond to black playing Nxd4?