Hi Varun,
Goa is a exquisite place to hangout with Partner, there are more than 10+ beaches which would not be able to cover in 1 day.
My recommendation is that you take a break till afternoon in the nearby beach to your stay, and in the evening you can visit Love Passion Karma Club and late you can visit the flee street market, you will surely find good deals there.
Happy Travelling!!
For one day..I would suggest you going to north goa
enjoy at baga beach and calangute beach
u can also visit chapora fort for sunset.At evening u can go to any club at tito's lane near baga beach😉