I am strongly considering the franciscan missionaries, and I completely accept the required vows of celibacy. It’s also worth noting though that my heart does belong to a young lady with a saintly soul; however, we will never be able to marry. Can I still pursue a vocation, given I accept my celibacy?
You should discuss this matter with someone (ex. a vocations director) within the community you feel called to.
And don’t state that your heart belongs to a creature, when nothing belongs to you, not your body, not your life, not your soul…exception made for your free will, which God has granted you so that you may freely follow Him in spirit and truth.
Loving someone is - in my view - not a hindrance to consecrated life, if your love is purely spiritual.
There is even provision for something rather rare called “Josephite marriage” in which the spouses, by mutual agreement, abstain from sexual relationships. This was the case of the Blessed Louis and Marie Martin, whom later, under spiritual direction, decided to cease the complete abstinence…and all 5 surviving children were called by God to consecrated life, one of them being St. Therese of Lisieux, Doctor of the Church.
As you can see, then, God understands highly spiritual love. However, there is quite a bit of discernment to be done on your side, and you ought not to do this alone, but under spiritual direction.
Openness to consecrated life and willingness to accept a vow of celibacy does not mean you are called to or ready for this vow. Consider the very religious community you are looking into. From what I read, the Franciscans have a year of Novitiate (with no vows), after which you take
simple temporary vows becoming a Simple Professed…and the simple vows are then renewed every year for three or four years…and only after these 4 to 5 years of discernment, you are allowed to request to be admitted and to pronounce
solemn perpetual vows.
May the Beloved Lord bring to completion what He has deigned to begin in you
being confident of this very thing, that He who began a good work in you will perfect it until the day of Jesus Christ