Loyal

1. faithful to one's sovereign, government, or state: a loyal subject.

2. faithful to one's oath, commitments, or obligations: to be loyal to a vow.

3. faithful to any leader, party, or cause, or to any person or thing conceived as deserving fidelity: a loyal friend.

Jason Rosemond is away serving time in the United States Navy, but his girlfriend Naila is remaining Loyal because she truly loves him.