Just because you are in love with someone does not mean you can (or should) proceed with that person toward marriage.
It is false interpretation of true marital love to believe that the feelings of being “in love” are what matters the most, and must discount all other factors, no matter how difficult or questionable. Sometimes, despite what we want and how we feel, the best thing for the other is that the relationship NOT proceed further.
Theologically, we Catholics know that we should not receive the Eucharist when we are in a state of grave sin.
Even should they separate, each would still be, in the eyes of the Church, “already married”, and hence it would be advisable for a Catholic not to become intimately involved in a romantic relationship with one of them.
In going thru an annulment process with a tribunal, it is not a given that the outcome will be dissolution or judgment of invalidity. The tribunal process is a looking back at the exchange of vows to see if there was some impediment preventing them from being really free to make this decision even if they thought they were ready to undertake it.
I don’t know about you, but for this girl, that’s tough stuff. It is this: Catholic men take discernment seriously.
They discern if and how to pursue you, how to be in relationship with you, and if they feel called to marry you.