Is That a 10 Foot Sandwich or Are You Just Glad to See Me?

Plot:

Joe and Helen just want some time alone with one and another, but Brian and Casey continually interrupt them. To apologize, Brian and Casey decide to surprise them with an engagement party, but Antonio misinterprets an overheard conversation and believes Brian to be sleeping with Casey. When she hears about it, Helen drags Joe to the party site well before they are expected.