Since love makes the world go round, it can get complicated at times. And this is quite more than just evident among celebrities whose love life is constantly under the radar. Given the influence paparazzi hold in Hollywood circles, one can imagine the stress a celebrity couple must endure on a daily basis. However, it'd be cynical to blame the breakups on the shutterbugs alone.

Many a time, there are deeper issues involved and what's more intriguing is how one of the two partners prefers to be clingy — even long after the splitsville. For reasons bordering on psychosis, some Hollywood celebrities simply refuse to move on. hitlist aims its lens on those who found it really hard to let go: