At some point, you have to make a decision. Boundaries don't keep other people out. They fence you in. Life is messy. That's how we're made. So, you can waste your lives drawing lines. Or you can live your life crossing them.
Did you say it? "I love you. I don't ever want to live without you. You changed my life." Did you say it? Make a plan. Set a goal. Work toward it, but every now and then, look around. Drink it in 'cause this is it. It might all be gone tomorrow.