Alex ends up in bed with Isabelle, whom he met in the toilet queue at a restaurant. Three months later, she shows up to tell him she's pregnant, because she thinks it's the decent thing to do (she's not looking for alimony or anything like that). Alex is caught off guard but the events cause him to propose to her and they get married in Vegas. Then the complications begin.
Not a regular romantic movie but more of a drama comedy. It is good and ends romantically.