Assalamu alaykum all,
In Surah al-Baqarah, ayat 102, Allah (swt) discusses the issue of sihr (magic, I loathe to use the term "black magic" because that implies there's a "white magic", which there isn't... magic is magic!), and Allah (swt) mentions very clearly and explicitely that it's used to break marriages primarily (and this ties in to the hadith of the shaytan who breaks a marriage being the most loved by Iblis). And this is done in a variety of ways (jinn causing arguments between spouses, making one behave strangely, and even preventing intimacy).
Now, it's my personal belief that the majority of "common folk" (i.e. people like you and me) are unaware of the danger that sihr actually poses. I think perhaps because we maybe don't realise the severity of it, or maybe because Hollywood has put a nice glitter upon it (e.g. Harry Potter)... or maybe we expect the signs to be obvious, or that no-one in the West would practise it?
Having learned the signs & dangers, etc, I'm actually quite concerned as to how real it actually is. I believe it's something I've already been in contact with (it's the only rational explanation for certain events), and even on a recent trip to Birmingham, a friend and I went to a takeaway which had taweez (magical spells) on the wall!
I wanted to raise the topic with you guys to see, generally, if a problem arose in the marriage which seemed completely bizarre or whatnot, would the possibility of magic even arise in your mind? Are we generally aware of its existence, and do we know the steps to protect ourselves and our spouse from this evil?
Alhumdulillah, I was fortunate enough to attend this event: Black Magic Seminar
The 'event' referred to in the video is also completely true. Sheikh Yasir Qadhi did this event originally 4 years ago, and there were two posessed sisters there, which, shall we say, caused a significant disturbance.
There was also a minor exhibition at the recent one too... so it's definitely real (in the sense of, it's happening to us now and there are people walking around who are possessed)... may Allah (swt) protect us from its effects and those who practise it.