Sometimes conflicts between members happen (for a variety of reasons). If you find yourself in that position, the best thing to do is ignore that member. You can add a member to your “blocked” list by editing your “privacy settings”.
Click "Edit Profile"
Click the "Settings" tab
Under “Privacy Settings”, find “Member Block List” at the bottom. If you start typing the member’s name, it should show a list. Pick the member you want to ignore and then click “Save Privacy Settings”. You should now no longer see posts from that member.