We had no trouble with a visit visa, being granted, but the amount of supporting evidence we supplied was great, almost as much as our Fiancée Visa!!! My wife as she is now was held in immigration for 3 hours and they called me in the airport, really they wanted to send her home, but they could not find any reason to do so especially after their call to me. The guy said I should have applied for a Fiancée Visa as we was already engaged after I had met her in the Philippines and he asked why the Visit Visa, I just told them the truth and said that I just wanted to make sure that life in the UK and the cold weather was something that Anilyn could live with and I also asked him if he would marry a woman who he had met on the internet, had many hours of telephone calls, thousands of emails and only visited once!!! He said you have a point and let her go. We got to spend a wonderful 6 months together while we prepared to make our Fiancée Visa application and now we are married and had our first wedding anniversary last month and as they say the rest is history :-)
As long as you are honest on the forms and follow all the advice you find in this forum and provide lots and lots of supporting evidence then there should be no problem with you application being approved. If you fail to provide this then you will be upset again :-( I cannot stress enough how important it is to provide all this information.
Just a brief run down on what you should have sent, Telephone bills proving conversations and texts, Proof of accommodation, wage slips, bank statements, internet chat logs and copies of emails, photographs of you both together, copies of any letters you sent each other. Letter of invite, there are some good examples of what to write in this forum and a letter from you boss stating how long you have worked and what salary. Have I missed anything? Hope this helps reassure you that what you have provided is enough.
Hoping you will be successful this time and good luck.