He cares about you a lot, and this is an intimate hug that only those who have very strong feelings for one another get to experience.
If snuggle hug is still a part of your relationship then be relaxed because you have a perfect loving relationship.
Maybe you even have a different kind of hug reserved for your best friends.
However, depending on the context, if this is the best hug they are physically able to give you, you should know that their hugs are signs of romantic affection.