How to align text similar to tabular while using align environment

Question

In LaTeX, I would like to align some text so that looks something like this:

"⇒": some text 
      [an equation in align* environment]
      more text

"⇐": some other text
      [another equation]
      even more text

without the use of minipages, and without me having to manually specify any width or similar every time I want to insert something like this. I would also like, that the "more text" place holder is aligned with the "even more text" place holder, if for example I write something longer than "⇐".

So basically just like inside a tabular environment with invisible borders, but tabular won't let me use align*

Answer 1

align is a full width display. aligned is essentially the same alignment but makes a box the natural width of the alignment, which can be inlined in other constructs.

\documentclass{article}

\usepackage{amsmath}

\begin{document}

\begin{align*}
  \Rightarrow:&\text{some text}\\
     &\begin{aligned}
       1&=3-2\\
       10&=3^2+1^2\\
       \end{aligned}\\
     &\text{more text}\\[10pt]
\Leftarrow:& \text{some other text}\\
     &\begin{aligned}
       2&=1+1\\
       5^2&=3^2+4^2\\
       \end{aligned}\\
      &\text{even more text}
\end{align*}
\end{document}

Answer 2

Another option to the one mentioned by David Carlisle would be to use something like this:

\begin{tabular}{ll}
  asdf & text \\
       &
  $ \begin{aligned}
      a +  b & = c    \\
      c      & = b+ a
    \end{aligned} $
\end{tabular}