updated 07/06/2012 AT 12:55 PM ET
•originally published 07/08/2012 AT 9:30 AM ET
In a series of new photos from a Fourth of July bash, the couple are seen smiling, smooching, laughing – and playing in a dunk tank with Lively’s family in New York.
In one steamy photo, Reynolds, 35, pulls Lively, 24, in close for a kiss while she wraps her arm around his neck and balances a drink in the other hand.
Lively wears a patriotic blue and white polka dot swimming suit, while Reynolds is pictured in a white tank top and khaki pants in some shots and in a pair of loose, blue swim trunks in others.
Lively and Reynolds began dating last fall, and the couple seems to have settled into comfortable pattern of spending time together with their families. In May, they had a big family dinner in the actor’s hometown of Vancouver.