Are Jennifer Aniston and Justin Theroux ever going to get married? That's what a lot of fans want to know and now a family therapist is questioning whether or not the Hollywood couple is doing the right thing by prolonging their engagement.

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Even though the couple have been engaged since August of 2012, they are yet to set a wedding date. Marriage and family therapist Dr. Jane Greer writes in the Huffington Post both the pros and cons of a long engagement while asking, "How long is too long?"

Dr. Greer said, "Consider first what is holding you back from setting a date and walking down the aisle. If you both have full-time jobs, for example, or are celebrities like Jennifer and Justin, the demands of the office and of upcoming projects might make it very difficult to plan a wedding."

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She added, "If the thing that is holding you back has more to do with your feelings than with logistics, take stock of what is going on so you can better understand it and deal with it. Has one of you been married before, maybe even suffered a betrayal as was the case with Jennifer, and therefore may be feeling afraid to take the plunge for fear something similar might happen again? Or, like Justin, has one of you never been married?"

Given that the public doesn't know exactly what is going on between Aniston and Theroux, Dr. Greer says that it's hard to say if the couple will ever make it down the aisle.

She explained, "Only time will tell if Jennifer and Justin fall into the category of both being okay with the long engagement, or if they will start to move apart in terms of what they each wish for. Hopefully, though, they will be able to move forward in their joint life together, proving their commitment to each other is enduring whether they are married or not."

Tags: Jennifer Aniston Justin Theroux