Being hijabi girl, being beard man, with tons da'waah activities, the hafidz/hafidzah, master all shari'ah knowledge, etc will not guaranty anyone immune from this kind of virus; the pinky virus, the virus of love.
Hijab is nothing if that only to cover the outside but we let our "inside" free; wandering, imagining, wild because the essence of hijab is what lay inside of our heart 
Men are the protectors and maintainers of women, because Allah has given the one more (strength) than the other, and because they support them from their means. That's meant they carry more responsibility on their shoulder higher, and for this reason they got a respect as a leader [Qowwam] consider man as qowwam we leave so many hope in your hands....We really wish you can be the best leader, a responsible, a determine, a firm but do not forget to include the love, mercy and compassion person...
Allah subhana wata'ala say : O mankind! We created you from a single (pair) of a male and a female, and made you into nations and tribes, that ye may know each other (not that ye may despise (each other). Verily the most honored of you in the sight of Allah is (he who is) the most righteous of you. And Allah has full knowledge and is well acquainted (with all things).
There are many reasons in some culture why this option seem impossible.. Some afraid their family treasure will fall to the outsider... Some prefer to strengthen the treaty between the families...
If the tradition of your family like this, you should think thousands [billions] times before take this choice....If you still insist want to take this choice at least try to socialize this thoughts long time before your got marriage. Never purpose any girl before you sure about this condition.
One of sister planed to marry with a brother from different country. All has been settled... His parents agreed and his siblings loved the sister. He already prepared the visa....He was moving his business to that sister country....All seemed just perfect and ready...But then his grandmas came, she totally rejected this idea...She took over all things; she made him engaged to his cousin. NO body could say things...
Maybe some of us never imagine if such OLD mature educated man couldn't do anything but cry and being isolated. He even was not allowed to contact that sister...
Where is his honor and dignity as a man....
Is that a honor man.. a qowwan.. a protector .. a maintainer??
Is that because brother always wants to appear like a single man??
6. Please have sufficient knowledge about everything that related to the sister that you are going to marry.
Whatever you do should have clear purpose, don't just do things for the sake of adventure or killing the time. If every man realize how big their responsibility, if they understand well for every act of hearing, or of seeing or of (feeling in) the heart will be enquired into (on the Day of Reckoning).  They will careful in every steps. They will be mindful whatever what they doing.
Excerpt from my the response to seekingthepathtoJannah :
 cover the outside is an obligation, but it will only just mere a cover that mean nothing if the heart not follow it Qur'an An Nur 24:330-31, Qur'an Al Ahzab 33:59