"The Wedding Ringer" is "Wedding Crashers Redux," a "Hangover Lite" that softens manic funnyman Kevin Hart’s persona into someone almost as funny, but more sentimental than abrasive. That helps "Ringer" work as a bromantic comedy that feels like a romantic comedy.

Like "Crashers," it’s built on a killer conceit. It’s about a guy who hires himself out as a rent-a-best man. Jimmy Callahan (Hart) rescues grooms who have failed to create and hang onto long-term friendships. In our overworked and digitally isolated culture, who has time for a "posse," "my boys" or a BFF close enough to stand up with you at the altar?

First-time feature director and co-writer Jeremy Garelick flips through scenes of Jimmy wearing a yarmulke or a wig, the life of the party at weddings of all races and genders. He does his homework and gives a tender, moving wedding reception toast. He’s so good at pretending to have been in someone’s life for decades, at knowing the groom’s heart, that he leaves the room in tears — every time. Occasionally, a client is so overcome he suggests they pal around afterward. But Jimmy keeps his distance.

"You know the rules. No contact after final payment."

Sure, that can make for a lonely life. But Jimmy’s a professional.

Enter sad sack Doug, played by Josh Gad ("Jobs," "Frozen") in a breakout role. Doug is about to marry bombshell Gretchen (Kaley Cuoco-Sweeting of "The Big Bang Theory"). Doug knows how lucky he is, but he’s so hapless he doesn’t just need a best man, he needs a team of groomsmen.

And he’s rich enough to afford "The Golden Tux" — that’s Jimmy’s full-service treatment. Jimmy proceeds to hire a motley crew that includes a stammering stripper, an ex-con, a TSA agent (Affion Crockett) and a Roto-Rooter man (Jorge Garcia).

Hart amps up the energy and makes Gad, a funny guy, funnier. Gad, in term, brings out Hart’s sweet side. Cuoco-Sweeting has only a single scene that allows us to think she wasn’t hired for the short-shorts/tight tank top that have been the keys to her TV success.

There’s not much new here. But a savvy, sassy script, smart casting and genuine "I feel sorry for this white boy" chemistry between Hart and Gad make "Wedding Ringer" a bromance that will touch you as often as it tickles you.