i'm not sure what you mean by 'histrionic' but part of what can be involved is needing to be the centre of attention (to guard against feelings of worthlessness). as such... the bubbly bubbly bubbly flirtatousness can be a defence against feelings of worthlessness... and feeling neglected (ie feeling like one is not being attended to enough, like one is not being pampered enough) can bring on panic...

that could... wear a little thin over time. lack of true emotional intimacy, you see. bubbly bubbly bubbly but whatever you do not emotional intimate! i mean... intimacy and the absence of bubbliness could mean that the other person feels as horrible about them as they feel about themself...

my personal thing is... person before pathology, absolutely. everybody has aspects of some pathology or other. and everyone is able to work on their faults or to live in a repetition compulsion over and over... i guess it is about seeing how things go over time and figuring out whether you would want to commit to this person for the long haul or not... and ditto for them, of course.