Is the boyfriends name Norman by any chance?

If he's that willing to let his mother control your relationship at this stage, imagine what it will be like in the future if you decide to get married and have kids...

he is 27 and still attached at the hip with his mom he might not be mentally or even emotionally mature enough to be in a committed relationship since he's already in one with his mother, there is a difference between being close to your mom and then their is being dependent and he sounds like he's Depends on her for a lot of things. you need to him OP and give us a follow up good luck.

His mother needs to learn that it is not her responsibility anymore.

That's a horse shit lie! lol he just don't want to move on together.. what an arse for using his mom for that lie.. im very sorry sweetheart.

That's either "forbade" or "has forbidden." He's either whipped or using her as an excuse. Either way, throw him back.

I cannot tell enough to say whether this is an unhealthy attachment to his mother without more context. We all care what those close to us think and want, and may find ourselves making odd choices to keep the peace and preserve our relationships: for many it is no different than a woman wanting a man to get her father's blessing before marriage, or a single parent deciding they need their children to approve their choice in partner. The choices we make affect those around us, and we want them to be happy and to approve. That having been said, if his mother's opinion was so important to him that he would suddenly change his plans, then he should have accounted for that before making them. Making big, long term plans without apparent qualification when you know that you could change your answer on a dime is disrespectful, in my opinion. Unless he thought this was dealt with and her objection came out of left field, he should have done better before the two of you built plans around this. Regardless, FYL OP. FYL.

Paging Norman Bates. Paging Norman Bates.

I'm actually in almost the exact same scenario right now (except we never even got to the stage of planning to move in together because her mother would have disowned her if she lived with someone before marriage). It sounds crazy but some people just have really strong opinions about it. And it sucks because I could have been a douchebag and held the relationship hostage (like her sister's boyfriend did) and gotten my way, but your relationship with your mother is important, and sometimes it's just not worth ruining that.

I had the same issue with my ex and his mom