While there may be some people for whom ejaculation is a key part of what they enjoy about sex, I think for most people things like communication, respect, and plain old attraction are going to be more important than whether you can ejaculate. Too, ideally someone who wanted to be sexual with you would be understanding of the realities of your body as a trans guy, and not make you feel bad for the ways your body does or does not respond during sex.
In terms of simulating ejaculate, there are some sex toys that are designed to do just that. So, that could also be something to explore with a partner if you were interested.