I find your question really sad. You can marry whomever you like. Being a devotee does not mean that you give up all decisions that pertain to your life.

I practise Vaisnavism and I am married to a non Vaisnava, but we respect each other.

The sectarianism that exists within the western branches of Gaudiya Vaisnvaism may affect your realationship with your partner, but if both of you are mature enough to see through the sectarian silliness then there should be few, if any, difficulties.

Look to the third verse of Siskhasaska, and follow it's maxims. You will be fine.

As to asking your prospective Guru whom you should marry? Mmmm....I find this bizzare. I have even seen people ask my Gurudeva which job they should have. What next? What type of house, car, computer I should buy? Just imagine having Guru approved iPods. I need to update my computer, so I'm going to ask my Gurudeva which platform I should use, Mac or PC. You see, being a disiciple I have to ask my Gurudeva permission before I do anything!

Maybe, just maybe, I need to understand guru tattva in a more mature way.

I don't know how long you have been around the Gaudiya scene. Be careful of accepting advice from people deeply involved with institutions, as such people tend to advance their institutions agenda while ignoring the individual's needs.

If you really are considering marriage look outside Gaudiya vaisnavaism for good practise, as the divorce rate in Western Vaisnavaism is very high, so something's wrong.

I know dozens of devotees who have been married two or more times, and have kids by many diferrent partners. This is very unheathly for our society, and our children.

I know many people will find what I say offensive, but look around you and look at the sociological history of the western branch of Gaudiya Vaisnavism, it not very pretty: failed marriages, loveless marriages; emotionally, physically abused children. Check out Prithu's wife account of married life. Watch Burnt Laddhu.

Many people seem to fear discussing such important sociological issues, as dissent within the herd is not encouraged. Just surrender to group think!

Just remember one thing no institution, Gaudiya Math or Iskcon, can give you bhakti...

Good luck.....