Both are true and work with each other.
We can stumble on love when we're not looking for it. However, I think there's a fair assumption that this will involve actually leaving the house and not sitting around moping and hoping.
It's about putting yourself out there, and taking a good chance if it's offered....but at the same time, not appearing like you're LOOKING.
Never regret anything that has happened in your life. It cannot be changed, forgotten or undone. So, take it as a lesson learned and move on.