I blew 3 relationships because someone else got interested in me and I went their way. Three people who I clicked with very well - and would have been great wives if they went further.

Ask your bf what his intentions are with you - and then ask guy #2. You may also want to meet the #2 family and friends and spend time with them to understand what kind of guy he "really" is. There is a lot of "language" guys like him use which is great for attraction but not good for stability. A good relationship includes far more than "attraction talk" (hey baby, spend time with me). It involves handling rough situations with grace, being able to support you, allowing you to be you and so on.