"I am always meant for you".
"I always meant for you."
Should "am" be used or not?
Edit: Garry's answer went up while I was still working on mine. Garrys rules are good, and I don't disagree with his point of view. My answer takes the approach of showing how both sentences can be correctly used. They could be improved upon by taking Garry's ideas into account, however.
These two sentences have entirely different meanings. Here they are in a larger context that will clarify this:
In the first case, you are using "meant" in the passive voice, meaning someone means you to have me, typically in marriage. It's a bit old fashioned, since it goes back to days where a woman didn't make her own decisions about whom she married.
In the second case, there is something previously explained that was meant for you. In the case of my example, I always meant that the money was for you, not for the other John.
#1 is close, but not common in AmE. The correct sentence should be:
If you want to include the word always, you could rephrase the sentence:
#2 is grammatically incorrect because you are missing the verb "to be"
For OP's intended sense here - "Fate (or my/our parents) have decreed that I was and always will be promised to you" - it is indeed necessary to include the auxiliary verb "to be".
But using present tense is at the very least "odd" - consider these results from Google Books...
This is because present tense am tends to "jar" with past tense meant. You can really only get away with this in contexts where you're deliberately seeking to emphasise the "current moment" at time of speaking (i.e. - "I have just realised that I am meant for you") - but even that doesn't work if you include always.