Does loneliness awaits or does it depend on the person? Can it be that talks, since generations, we should get married to feel complete triggers the idea of loneliness simply because society claims it's impossible to feel complete if being single?

What you describe is in my eyes love, but love doesn't need (like we call it) the butter wrap (a paper).
Such a paper will for sure make it very hard to leave (years of misery and bankruptcy included and a small chance to start a new life. If you ask me life is too short for that).