Could be, unless he believes she doesn't dress "well enough" - that part wasn't specified.
One can get criticized both for dressing up in a manner that is too "tempting", but as Laura describes herself as "spacey", I would think that the opposite is true, and she just throws on whatever clothes she finds in the closet, and goes to class. In this case it can well be the boyfriend's problem with the way he dresses, wanting to improve his style but not knowing it, or not caring enough to do that. And again, maybe he wants Laura to try and "improve" him in that manner, too, because that's what he considers as "a loving relationship".
I'd say it could be another form of insecurity, but in himself, and not specifically in the relationship.