Is it possible for a man to be nice to two women at the same time?

Yes, men have been flirting since ancient times, just like covering up a fever with a quilt since ancient times is wrong.

It’s not that they can’t afford it, it’s that they think that being so good to her is called love, and that treating another her like that is love. In fact, you have already made up your mind. I just can't figure it out. The love you give may not be what they want, or it may only satisfy part of it but not most of it. That's not love, it's charity.

If you "love" the first her, you won't "love" the second her. That's not love, it's responsibility. To put it nicely, it's called family affection.

It’s like one is flesh and the other is heart. It can’t be done without flesh, it won’t be human; it can’t be done without heart, it will be like a walking zombie.

It’s up to you to decide.