Need help with DAX and visuals to highlight relationships between two values

Hi

I have a single table with Value1 and Value2 values, for example:

Value1 - Value2

A - B

B - C

B - D

C - E

The relationships do not apply in a particular direction, and visualising this using something like a Forced-Directed Chart shows the relationships quite well. You can see how it shows all the relationships with B, irrespective as to whether B is in Value1 or Value2.

But the data needs to be filtered by B and if I base the filter on Value1, then I will only see the relationships with C and D, and conversely, if I base the filter on Value2, then I will only see the reltionship with A. I need to be able to select B and show A, C and D.

I think what I need do is to ensure all distinct values across Value1 and Value2 and represented in (for example) Value1 and for all its relationships to appear in Value2. Something like

Value1 - Value2

A - B

B - A

B - C

B - D

C - B

C - E

D - B

E - C

Is this the solution, and could such a dataset be derived?