Blake Lively and Ryan Reynolds
Juan Sharma/Pacific Coast News
had quite a lively birthday – literally!
was on hand at every turn during the weekend that Reynolds celebrated turning the big 3-5.
After the duo was photographed together
on Saturday morning outside of Reynolds's Boston-area apartment – and spotted out Thursday night in New York with Sandra Bullock
– Lively, 24, visited her new beau on his latest movie set in Boston on Sunday.
Poking her head out of Reynolds's trailer, the Gossip Girl
star watched her Green Lantern
costar ride his bike around the set of R.I.P.D.
Lively didn't stop by empty-handed. Joined by her little Maltipoo Penny, the actress left her mini canine wrapped in balloons for the birthday boy.
"They are very much a couple," a source recently told PEOPLE. "They're really happy together."