Is it like something you feel or just know? How do you know you are called to marriage or called to another vocation or just called to be a chaste single person?
If you are perfect or close to perfect in the virtue of chastity (it is easy and pleasant to avoid serious 6th Commandment problems for an indefinite period) then you likely are being called to be celibate, which is what Christ Himself indicates. That might be a better way of looking at it.
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