Something else always comes along to claim your loyalty. The concept means almost nothing. Other words do a way better job at describing our relationships.
The last thing you want is someone hanging around only due to a false sense of loyalty, pride, or obligation. Screw that. You deserve better.
Loyalty usually offers nothing but a couple of trinkets and a t-shirt. It takes everything, though. Blind trust. Sacrifice. Someone who wants your loyalty doesn’t give a shit about you.
The best thing you can ask for in a relationship is long term mutual interest with benefits. That doesn’t sound very romantic. But it works really well. And it’s a lot harder to find that than you think.