All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His Slave and Messenger.
Our advice to you is to hasten to marry this girl or another; verily, marriage is the best solution for such evil inclinations that you experience, which is attraction to your own gender. You must conceal your condition and not inform anyone of it, whether it is your future wife or anyone else. Announcing such unnatural urges is a sin in itself and leads the person to carry on with them rather than seek a remedy. For more benefit, please refer to Fataawa 94253 and 81962.
If you sincerely turn to Allaah, resolving to find a remedy for these inclinations, then Allaah shall aid you and grant you what you aspire to; He says (what means): {And when the matter (of fighting) was determined, if they had been true to Allaah, it would have been better for them.} [Quran 47:21] The Prophet said to one of the Companions in battle: "If you are true to Allaah, He will be true to you (i.e. He will fulfill your wish)." Shortly after that this man was martyred and the Prophet remarked: "He was true to Allaah, so Allaah was true to him." [An-Nasaa'i]
You should also strive in repelling the whispers of Satan. Indeed, Satan is devising evil schemes to lead you astray and instill fear in your heart so as to prevent you from turning to your Lord. Hence, you should tease Satan by every permissible means including reciting supplications like the one stated in the following hadeeth frequently: ʻAbdullaah ibn Masʻood reported that the Prophet used to say: "Allaahumma inni as'aluka Al-Huda wa At-Tuqa wa Al-ʻAfaafa wa Al-Ghina (O Allaah! I ask You for guidance, piety, chastity and self-sufficiency)." [Muslim]
You should also keenly perform acts of obedience so as to attain refinement of the soul and illuminate your heart and accordingly you can avoid sins which saddens Satan. It was narrated on the authority of Abu Hurayrah that the Prophet said: "When the son of Aadam (Adam) recites a verse entailing performing prostration of recitation and prostrates, Satan withdraws weeping, saying: 'Woe to him! The son of Aadam was commanded to prostrate and he prostrated, and Paradise will be his; I was commanded to prostrate and I refused, so I am doomed to Hellfire." [Muslim] The version reported by Abu Kurayb reads, "Woe unto me, the son of Aadam was commanded to prostrate, and he prostrated and Paradise was entitled to him, and I was commanded to prostrate, but I refused and am doomed to Hellfire.."
If a mere prostration before Allaah causes Satan to say so and teases him that much, what then would performing acts of obedience and striving to adhere to steadfastness on the straight path in general do to him? Also, you should keep the company of good and pious people and avoid the company of evil doers.
Allaah Knows best.