People grow together, but they can also grow apart. The important thing here is to be sure you and your partner stay in touch with each other on any new developments. Some families are more tightly structured than others. But you must be willing to put your present partner ahead of everyone else. You aren't ready for a new commitment if you haven't yet dealt with the old ones.
Nothing is as shaky as a partnership founded on desperation.
It's okay to seek out friends in times of loss. But before making any long-term decisions, wait until the dust settles and you have your feelings back under control. Before making a permanent commitment, stand back and take a good, hard look at yourself, at your partner, and at the way you function together as a couple. If you're completely honest in the evaluation, there are bound to be some noticeable flaws. But personal relationships are never perfect.