blairwitch20, beware of big box stores and Amazon specials. They are usually short hammocks, and at about 6ft, you'll be much more comfortable in the standard 11 ft hammock most cottage industry folks sell. A place to start is to get Derek Hanson's book, "The Ultimate Hang". You can buy it on Amazon or order it through your local book seller. It's now on its 3rd edition.
Be sure to read other posts in this forum about two-in-a-hammock. If you want to be close, it might be better if you each have your own hammock and share two trees - one hammock coming off the left side of the tree, the other hammock coming off the right side of the tree. Two in a hammock is not like a bed, where you could have some space between you. Again, these aspects have been covered in other posts here.
That said, for just hanging out in the park - that's a whole different ball game. Stores like Home Depot, and outlets like Amazon sell hammocks identified as Brazilian Hammocks that are usually woven material (cotton or nylon), wide, with spreader bars (not to be confused with Bridge Hammocks that are an alternate to Gathered End Hammocks for a single person. Those woven hammocks would probably work for two and a day in the park. That said, we are now in the Winter months around here, and Home Depot probably doesn't consider a hammock to be a winter item to keep in stock.
If you are really, really keen on sleeping next to someone using one hammock, DutchWare sells a Vortex model that is essentially two hammocks with one side sewn together. So you each have your own hammock "bed" with one side in common.