Lack of shared interests or willingness to explore each other's interests can surface early, and it matters, said Pescosolido.

CNN: Make or break? Travel tests your love life

"Your first trip will not only reveal your compatibility as a dating couple, but ultimately how you will relate as a married couple, " said Allison Pescosolido, co-founder of counseling service Divorce Detox in Santa Monica, California.

CNN: Make or break? Travel tests your love life