So what you're telling me is that you're 22 and you've been 'married in heart' (whatever that means) for 6 years?
So if we break it down, you moved in with some guy at age 16 and that makes you married? I don't even know how anyone is able to make a rational decision about something as important as 'marriage' (much less fully understand what it means) at age 16.
You can choose to call it whatever you want, but the fact remains that if you are living with someone you're in a romantic relationship with, and living as though married (as in having sexual encounters with that person) and you are not 'LEGALLY' married, then I'm sorry you are not married at all...you're just living in sin. '
In terms of legal rights and such, yes unfortunately the sad fact is that our world has degraded the institution of marriage (which, might I add was instituted by God himself)...don't believe me, read the bible. Anyway, back on topic, yes it's tragic nowadays de-facto couples/civil unions/ whatever you want to call them have the same 'rights' as legally married couples. That's because the world has distorted the meaning of marriage. However, have you ever heard the saying 'two wrongs don't make a right?"...well just because the world says 'sure it's okay to live together, sleep together and not get married'....doesn't mean it is. So actually legally it makes not an ounce of difference (to the rights you have if the relationship fails), it does however makes a HUGE difference to God.
Your original post referred to how God views this 'marriage in heart' thing (honestly- I've never heard that term before- was it made up on this thread?) well if you read your bible, you'll have your answer.
The thing is, if you're a Christian and you love God, you make choices accordingly. You make sacrifices and do things differently. Things the world might consider weird or out dated. Why? Because you love God, and as your relationship deepens with Him, so does your desire to want to do what is right, what is holy and pleasing to Him. You do not want to be conformed to the ways of the world. Romans 12:2. As Christians, we are called to be the LIGHT of the world. That point of difference that makes people take notice.
The world sees Christianity as this list of rules of do's and don'ts but that's simply not the case. We aren't bound by rules and laws, we live under a grace and we have free-will, but because we know this, understand it, value it and LOVE our God, we choose to remove the junk from our lives. We willingly choose to rid our lives of worldly values and replace them with Godly ones. We have to realise it's not about us, it's all about God. While we do have free-will, we use that will (freely) to make God-honouring choices in our lives.
I do not mean to upset you, nor do I profess to assume what you believe about faith or Christianity, but I hope this has given you some insight into things. I encourage you to take the time to evaluate your situation. Seek God earnestly, allow Him to speak to you. When He does, don't be afraid to answer His call. His answer may not be what you want to hear, and it might seem a tough choice to make, but it will be the right one. God doesn't always give us what we want...why? Because most of the time what we think we want, is the complete wrong thing for us, and He knows this! If you step out in faith and place your trust in Him (and it's by no means an easy task) you will see Him move mountains in your life! I guarantee it.
If you get the chance, please read the following scriptures (I already mentioned Romans 12:2) but also check out:
Matthew 5:13, Matthew 16:26, Jeremiah 29:11, Joshua 1:9, Deuteronomy 31:6 and James 4:17
Blessings.