Yes - it is difficult, it seems, to build proper boundaries and enforce them with fidelity. In some cases, avoid the "toxic sensitivity" is the best plan - this person may count on the overreaction of others in order to have their needs met - there are healthier ways, but people will do what gets the response they desire. Saying "no" to toxicity on either end of the spectrum is a good way to preserve your own mental and emotional health.