The stunning supermodel, 22, posted back-to-back emotional tweets with one reading: 'I wish people didn't have to be so cruel on social media'.
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And the plea comes after followers claimed she will 'always be second best' to her husband Justin Bieber's ex Selena Gomez.
'People are awful to you, and then wonder why you get defensive,' she continued in the same posting.
Minutes later, the daughter of actor Stephen Baldwin wrote: 'I just wish people knew my heart'.
The soul-stirring Twitter reactions may have stemmed from fans saying she will 'never compare' to the Hands To Myself pop star who had an on-off romance from 2009 to March 2018 with Justin.
A few months after Justin and Selena called it quits, he was engaged to Hailey.
One follower wrote: 'Can you stop forcing your relationship already... we all know your 2nd best. You always will be and always have been.' (sic)
A second added: 'He will leave you one day and he will go to selenaaaaaaaaaa' (sic) while another wrote: 'Fake laughs he miss Selena' (sic).
Another fan simply wrote: 'Jelena 4 lyfe man' with a second writing: 'In everything imitates Selena even in her photos... maybe she wants to look like sel to see if Justin likes thats and comes to love her really.' (sic)
In an explosive post on her Instagram story, Hailey wrote: 'You little internet kiddos need to learn how to move on for real.
'We're adults that have better things to do than waste time explaining something just so you can stop your delusional fantasies
I'm not going to sit here and let obsessive strangers try to tell me about my own husband, you wanna talk about somebodies husband then get ur own. G'night!!'
Justin and Selena had a storied, and sometimes turbulent, relationship that began back in 2009 when they were both teenagers.
There were several break-ups and make-ups that culminated with a final split in March 2018.
A couple of months later the Sorry hitmaker reunited with Hailey, proposed in July and married the model at a New York City courthouse in September 2018.
