gamerbro -

Throughout training you will be around home most of the time. There will be days/weeks away at a time. If your girlfriend is expecting you to be home every night at 1700, then one (or both) of you had better rethink your plans. I rmemeber a friend with a wife who had no idea in TBS that he would be gone overnight. It was a rude awakening for them both; and this was just TBS! He ended up a CH-53 pilot and the last I heard - still happily married. It can be a learning process.

After training and into the fleet, it doesn't matter what aviation community you find yourself in you had better be prepared for between 40-60% time away from home.
In that first commitment, you can expect quite a few deployments while in the fleet and during your non-aviation related tour (outside of your warfare community) you could be faced with extremely long work hours or more deployments if on a FAC tour or the like. There are some second tours that have a fairly family friendly atmosphere. Professional schools and flight instructing are two of the most popular.

Can you live overseas? The Marines only have overseas bases in Japan, and yes you can get 3 years orders over there and take your family and you can eitehr live on-base or off-base. You might get some staff tour in Germany later on and take your family with you; but in those first 8 years - Japan is your main (if not only) option. Otherwise - Marine aviation is basically East/West Coast based with 6+ month deployment cycles.

USMCFLYR