Your doom lies in your name, not in yourself....

[Bill Ferny]

RotK, Appendix A, v.

Elrond to Aragorn:

You shall neither have wife, nor bind any woman to you in troth, until your time comes and you are found worthy of it… But I do not speak of my daughter alone. You shall be betrothed to no man’s child as yet…

Albeit conditional and, as it turned out, temporary, it is still an injunction. Only if Aragorn is found worthy, will Elrond allow the “bitter parting” between he and his daughter.